diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ef498c7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/vendor
+/cost-exporter*
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..2d0e26e
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,29 @@
+sudo: required
+
+language: go
+
+services:
+  - docker
+
+script:
+- docker build -t cost-exporter --target builder --no-cache .
+- >
+  docker run
+  --name cost-exporter
+  --entrypoint "sh"
+  -e CGO_ENABLED=0
+  --workdir "/go/src/github.com/rebuy-de/cost-exporter"
+  cost-exporter
+  -euxc "make xc && mkdir releases && mv cost-exporter-* releases"
+- docker cp -L cost-exporter:/go/src/github.com/rebuy-de/cost-exporter/releases ./releases
+- ls -l *
+
+deploy:
+  provider: releases
+  api_key: $GITHUB_TOKEN
+  file_glob: true
+  file: releases/*
+  skip_cleanup: true
+  on:
+    repo: rebuy-de/cost-exporter
+    tags: true
diff --git a/Dockerfile b/Dockerfile
index 7ffe011..15cb9b9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1 +1,27 @@
-FROM golang:1.10-alpine
+FROM golang:1.10-alpine as builder
+
+RUN apk add --no-cache git make
+
+# Configure Go
+ENV GOPATH /go
+ENV PATH /go/bin:$PATH
+RUN mkdir -p ${GOPATH}/src ${GOPATH}/bin
+
+# Install Go Tools
+RUN go get -u github.com/golang/lint/golint
+RUN go get -u github.com/golang/dep/cmd/dep
+
+COPY . /go/src/github.com/rebuy-de/cost-exporter
+WORKDIR /go/src/github.com/rebuy-de/cost-exporter
+RUN CGO_ENABLED=0 make install
+
+FROM alpine:latest
+
+RUN apk add --no-cache ca-certificates
+
+COPY --from=builder /go/bin/cost-exporter /usr/local/bin/
+COPY run.sh /run.sh
+
+RUN chmod +x /run.sh
+
+ENTRYPOINT ["/run.sh"]
diff --git a/Gopkg.lock b/Gopkg.lock
new file mode 100644
index 0000000..f4eac24
--- /dev/null
+++ b/Gopkg.lock
@@ -0,0 +1,238 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  digest = "1:bee95eb17352bd55583a5f4646cac5395f1f1e7de5c907d8889efd13896cea98"
+  name = "github.com/aws/aws-sdk-go"
+  packages = [
+    "aws",
+    "aws/awserr",
+    "aws/awsutil",
+    "aws/client",
+    "aws/client/metadata",
+    "aws/corehandlers",
+    "aws/credentials",
+    "aws/credentials/ec2rolecreds",
+    "aws/credentials/endpointcreds",
+    "aws/credentials/stscreds",
+    "aws/csm",
+    "aws/defaults",
+    "aws/ec2metadata",
+    "aws/endpoints",
+    "aws/request",
+    "aws/session",
+    "aws/signer/v4",
+    "internal/sdkio",
+    "internal/sdkrand",
+    "internal/sdkuri",
+    "internal/shareddefaults",
+    "private/protocol",
+    "private/protocol/ec2query",
+    "private/protocol/json/jsonutil",
+    "private/protocol/jsonrpc",
+    "private/protocol/query",
+    "private/protocol/query/queryutil",
+    "private/protocol/rest",
+    "private/protocol/xml/xmlutil",
+    "service/costexplorer",
+    "service/ec2",
+    "service/sts",
+  ]
+  pruneopts = ""
+  revision = "b36008bfc7d4b9826423278ae193420e41afc4b4"
+  version = "v1.15.14"
+
+[[projects]]
+  branch = "master"
+  digest = "1:c0bec5f9b98d0bc872ff5e834fac186b807b656683bd29cb82fb207a1513fabb"
+  name = "github.com/beorn7/perks"
+  packages = ["quantile"]
+  pruneopts = ""
+  revision = "3a771d992973f24aa725d07868b467d1ddfceafb"
+
+[[projects]]
+  digest = "1:858b7fe7b0f4bc7ef9953926828f2816ea52d01a88d72d1c45bc8c108f23c356"
+  name = "github.com/go-ini/ini"
+  packages = ["."]
+  pruneopts = ""
+  revision = "358ee7663966325963d4e8b2e1fbd570c5195153"
+  version = "v1.38.1"
+
+[[projects]]
+  digest = "1:f958a1c137db276e52f0b50efee41a1a389dcdded59a69711f3e872757dab34b"
+  name = "github.com/golang/protobuf"
+  packages = ["proto"]
+  pruneopts = ""
+  revision = "b4deda0973fb4c70b50d226b1af49f3da59f5265"
+  version = "v1.1.0"
+
+[[projects]]
+  digest = "1:870d441fe217b8e689d7949fef6e43efbc787e50f200cb1e70dbca9204a1d6be"
+  name = "github.com/inconshreveable/mousetrap"
+  packages = ["."]
+  pruneopts = ""
+  revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
+  version = "v1.0"
+
+[[projects]]
+  digest = "1:6f49eae0c1e5dab1dafafee34b207aeb7a42303105960944828c2079b92fc88e"
+  name = "github.com/jmespath/go-jmespath"
+  packages = ["."]
+  pruneopts = ""
+  revision = "0b12d6b5"
+
+[[projects]]
+  digest = "1:63722a4b1e1717be7b98fc686e0b30d5e7f734b9e93d7dee86293b6deab7ea28"
+  name = "github.com/matttproud/golang_protobuf_extensions"
+  packages = ["pbutil"]
+  pruneopts = ""
+  revision = "c12348ce28de40eed0136aa2b644d0ee0650e56c"
+  version = "v1.0.1"
+
+[[projects]]
+  digest = "1:7365acd48986e205ccb8652cc746f09c8b7876030d53710ea6ef7d0bd0dcd7ca"
+  name = "github.com/pkg/errors"
+  packages = ["."]
+  pruneopts = ""
+  revision = "645ef00459ed84a119197bfb8d8205042c6df63d"
+  version = "v0.8.0"
+
+[[projects]]
+  digest = "1:4142d94383572e74b42352273652c62afec5b23f325222ed09198f46009022d1"
+  name = "github.com/prometheus/client_golang"
+  packages = [
+    "prometheus",
+    "prometheus/promhttp",
+  ]
+  pruneopts = ""
+  revision = "c5b7fccd204277076155f10851dad72b76a49317"
+  version = "v0.8.0"
+
+[[projects]]
+  branch = "master"
+  digest = "1:185cf55b1f44a1bf243558901c3f06efa5c64ba62cfdcbb1bf7bbe8c3fb68561"
+  name = "github.com/prometheus/client_model"
+  packages = ["go"]
+  pruneopts = ""
+  revision = "5c3871d89910bfb32f5fcab2aa4b9ec68e65a99f"
+
+[[projects]]
+  branch = "master"
+  digest = "1:f477ef7b65d94fb17574fc6548cef0c99a69c1634ea3b6da248b63a61ebe0498"
+  name = "github.com/prometheus/common"
+  packages = [
+    "expfmt",
+    "internal/bitbucket.org/ww/goautoneg",
+    "model",
+  ]
+  pruneopts = ""
+  revision = "c7de2306084e37d54b8be01f3541a8464345e9a5"
+
+[[projects]]
+  branch = "master"
+  digest = "1:e04aaa0e8f8da0ed3d6c0700bd77eda52a47f38510063209d72d62f0ef807d5e"
+  name = "github.com/prometheus/procfs"
+  packages = [
+    ".",
+    "internal/util",
+    "nfs",
+    "xfs",
+  ]
+  pruneopts = ""
+  revision = "05ee40e3a273f7245e8777337fc7b46e533a9a92"
+
+[[projects]]
+  digest = "1:13f72d28227aaed50d9a1226efbd52d478fc4cac213ed47b175ab469e11faf9b"
+  name = "github.com/rebuy-de/rebuy-go-sdk"
+  packages = ["cmdutil"]
+  pruneopts = ""
+  revision = "ca80dbe1ba46d4f835698698bba63b1b48385a41"
+  version = "v1.2.0"
+
+[[projects]]
+  digest = "1:6ab228f39a195cb1dab3564a0f27dc24a52bb3a19fa58dd2967f1e7b2482d82b"
+  name = "github.com/robfig/cron"
+  packages = ["."]
+  pruneopts = ""
+  revision = "b41be1df696709bb6395fe435af20370037c0b4c"
+  version = "v1.1"
+
+[[projects]]
+  digest = "1:3fcbf733a8d810a21265a7f2fe08a3353db2407da052b233f8b204b5afc03d9b"
+  name = "github.com/sirupsen/logrus"
+  packages = ["."]
+  pruneopts = ""
+  revision = "3e01752db0189b9157070a0e1668a620f9a85da2"
+  version = "v1.0.6"
+
+[[projects]]
+  digest = "1:a1403cc8a94b8d7956ee5e9694badef0e7b051af289caad1cf668331e3ffa4f6"
+  name = "github.com/spf13/cobra"
+  packages = ["."]
+  pruneopts = ""
+  revision = "ef82de70bb3f60c65fb8eebacbb2d122ef517385"
+  version = "v0.0.3"
+
+[[projects]]
+  digest = "1:0a52bcb568386d98f4894575d53ce3e456f56471de6897bb8b9de13c33d9340e"
+  name = "github.com/spf13/pflag"
+  packages = ["."]
+  pruneopts = ""
+  revision = "9a97c102cda95a86cec2345a6f09f55a939babf5"
+  version = "v1.0.2"
+
+[[projects]]
+  branch = "master"
+  digest = "1:97fb4f02b231deef44704b6fa74d31e46f669fb217f192754ba603c2b32a190b"
+  name = "golang.org/x/crypto"
+  packages = ["ssh/terminal"]
+  pruneopts = ""
+  revision = "aabede6cba87e37f413b3e60ebfc214f8eeca1b0"
+
+[[projects]]
+  branch = "master"
+  digest = "1:1132cbdac95d6a2a30f7434f7190b3b1345e85b6071e74911b1dce3e19e1543d"
+  name = "golang.org/x/sys"
+  packages = [
+    "unix",
+    "windows",
+  ]
+  pruneopts = ""
+  revision = "1c9583448a9c3aa0f9a6a5241bf73c0bd8aafded"
+
+[[projects]]
+  digest = "1:50dc9975542e0e7e7444e4683011041b1386a42db360a2f4e2ed8edb34e7e4c9"
+  name = "gopkg.in/gemnasium/logrus-graylog-hook.v2"
+  packages = ["."]
+  pruneopts = ""
+  revision = "c4a7de647eaaac00ffea599b7773e5e6804fa3b7"
+  version = "v2.0.7"
+
+[[projects]]
+  digest = "1:f0620375dd1f6251d9973b5f2596228cc8042e887cd7f827e4220bc1ce8c30e2"
+  name = "gopkg.in/yaml.v2"
+  packages = ["."]
+  pruneopts = ""
+  revision = "5420a8b6744d3b0345ab293f6fcba19c978f1183"
+  version = "v2.2.1"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  input-imports = [
+    "github.com/aws/aws-sdk-go/aws",
+    "github.com/aws/aws-sdk-go/aws/credentials",
+    "github.com/aws/aws-sdk-go/aws/endpoints",
+    "github.com/aws/aws-sdk-go/aws/session",
+    "github.com/aws/aws-sdk-go/service/costexplorer",
+    "github.com/aws/aws-sdk-go/service/ec2",
+    "github.com/prometheus/client_golang/prometheus",
+    "github.com/prometheus/client_golang/prometheus/promhttp",
+    "github.com/rebuy-de/rebuy-go-sdk/cmdutil",
+    "github.com/robfig/cron",
+    "github.com/sirupsen/logrus",
+    "github.com/spf13/cobra",
+    "gopkg.in/yaml.v2",
+  ]
+  solver-name = "gps-cdcl"
+  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
new file mode 100644
index 0000000..22d6652
--- /dev/null
+++ b/Gopkg.toml
@@ -0,0 +1,15 @@
+[[constraint]]
+  name = "github.com/rebuy-de/rebuy-go-sdk"
+  version = "1.2.0"
+
+[[constraint]]
+  name = "github.com/prometheus/client_golang"
+  version = "0.8.0"
+
+[[constraint]]
+  name = "github.com/aws/aws-sdk-go"
+  version = "1.15.4"
+
+[[constraint]]
+  name = "github.com/robfig/cron"
+  version = "1.1.0"
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..1061a37
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,3 @@
+PACKAGE=github.com/rebuy-de/cost-exporter
+
+include golang.mk
diff --git a/README.md b/README.md
index bc3dd28..e833106 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,46 @@
 # cost-exporter
-Retrieves cost metrics and core counts from the AWS API and exposes this information via a Prometheus /metrics endpoint.
+
+[![Build Status](https://travis-ci.org/rebuy-de/cost-exporter.svg?branch=master)](https://travis-ci.org/rebuy-de/cost-exporter)
+[![license](https://img.shields.io/github/license/rebuy-de/cost-exporter.svg)]()
+
+Retrieves cost metrics and core counts from the AWS API and exposes this information via a Prometheus `/metrics` endpoint.
+
+> **Development Status** *cost-exporter* is for internal use only. Feel free to use
+> it, but expect big unanounced changes at any time. Furthermore we are very
+> restrictive about code changes, therefore you should communicate any changes
+> before working on an issue.
+
+
+## Installation
+
+Docker containers are are provided [here](https://quay.io/repository/rebuy/cost-exporter). To obtain the latest docker image run `docker pull quay.io/rebuy/cost-exporter:master`.
+
+To compile *cost-exporter* from source you need a working
+[Golang](https://golang.org/doc/install) development environment. The sources
+must be cloned to `$GOPATH/src/github.com/rebuy-de/cost-exporter`.
+
+Also you need to install [godep](github.com/golang/dep/cmd/dep),
+[golint](https://github.com/golang/lint/) and [GNU
+Make](https://www.gnu.org/software/make/).
+
+Then you just need to run `make build` to compile a binary into the project
+directory or `make install` to install *cost-exporter* into `$GOPATH/bin`. With
+`make xc` you can cross compile *cost-exporter* for other platforms.
+
+
+## Usage
+
+**node-drainer**'s configuration is done using an configuration file that is pointed to when running the command, as well as a flag that defines the port it should listen on:
+```
+cost-exporter --config=/cost-exporter/config.yaml --port=8080
+```
+
+For more information, run:
+```
+cost-exporter --help
+```
+
+
+### Running in Kubernetes
+
+Please see the `example/k8s/` directory for an example of how to run `cost-exporter` in Kubernetes.
diff --git a/cmd/root.go b/cmd/root.go
new file mode 100644
index 0000000..6bd1a9b
--- /dev/null
+++ b/cmd/root.go
@@ -0,0 +1,53 @@
+package cmd
+
+import (
+	"github.com/rebuy-de/cost-exporter/pkg/config"
+	"github.com/rebuy-de/cost-exporter/pkg/prom"
+	"github.com/rebuy-de/cost-exporter/pkg/retriever"
+	"github.com/rebuy-de/rebuy-go-sdk/cmdutil"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+type App struct {
+	config string
+	port   string
+}
+
+func (app *App) Run(cmd *cobra.Command, args []string) {
+	if app.config == "" {
+		logrus.Fatal("Configuration file location not defined.")
+	}
+
+	config := config.Parse(app.config)
+
+	coreRetriever := retriever.CoreRetriever{
+		Accounts:    config.Accounts,
+		IntervalSec: config.Settings.CoresInterval,
+	}
+	coreRetriever.Run()
+
+	costRetriever := retriever.CostRetriever{
+		Accounts: config.Accounts,
+		Cron:     config.Settings.CostCron,
+	}
+	costRetriever.Run()
+
+	prom.Run(app.port)
+
+	select {}
+}
+
+func (app *App) Bind(cmd *cobra.Command) {
+	cmd.PersistentFlags().StringVarP(
+		&app.config, "config", "c", "", `Path to configuration file.`)
+	cmd.PersistentFlags().StringVarP(
+		&app.port, "port", "p", "8080", `Port to bind to.`)
+}
+
+func NewRootCommand() *cobra.Command {
+	cmd := cmdutil.NewRootCommand(new(App))
+	cmd.Short = "AWS billing data Prometheus exporter."
+	cmd.Use = "cost-exporter"
+	return cmd
+}
diff --git a/example/k8s/configmap.yaml b/example/k8s/configmap.yaml
new file mode 100644
index 0000000..cb758f4
--- /dev/null
+++ b/example/k8s/configmap.yaml
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: cost-exporter
+  labels:
+    app: cost-exporter
+data:
+  config.yaml: |-
+    accounts:
+    - name: staging
+      id: ABCDEFGHIJKLMNOPQRST
+      secret: 1234567890123456789012345678901234567890
+    settings:
+      costCron: "0 0 19 * * *"
+      coresInterval: 300
diff --git a/example/k8s/deployment.yaml b/example/k8s/deployment.yaml
new file mode 100644
index 0000000..e1aa992
--- /dev/null
+++ b/example/k8s/deployment.yaml
@@ -0,0 +1,52 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+
+metadata:
+  name: cost-exporter
+  labels:
+    app: cost-exporter
+
+spec:
+  replicas: 1
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+
+  selector:
+    matchLabels:
+      app: cost-exporter
+
+  template:
+    metadata:
+      name: cost-exporter
+      labels:
+        app: cost-exporter
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "8080"
+        prometheus.io/path: "/metrics"
+
+    spec:
+      containers:
+      - name: silo
+        image: quay.io/rebuy/cost-exporter:master
+        imagePullPolicy: Always
+        args:
+          - '--config=/cost-exporter/config.yaml'
+          - '--port=8080'
+        ports:
+        - containerPort: 8080
+        resources:
+          requests:
+            cpu: 10m
+            memory: 50Mi
+          limits:
+            cpu: 10m
+            memory: 50Mi
+        volumeMounts:
+          - name: config-volume
+            mountPath: /cost-exporter
+      volumes:
+      - name: config-volume
+        configMap:
+          name: cost-exporter
diff --git a/golang.mk b/golang.mk
new file mode 100644
index 0000000..de4f571
--- /dev/null
+++ b/golang.mk
@@ -0,0 +1,84 @@
+# Source: https://github.com/rebuy-de/golang-template
+# Version: 2.0.4-snapshot
+# Dependencies:
+# * dep (https://github.com/golang/dep)
+# * gocov (https://github.com/axw/gocov)
+# * gocov-html (https://github.com/matm/gocov-html)
+
+NAME=$(notdir $(PACKAGE))
+
+BUILD_VERSION=$(shell git describe --always --dirty --tags | tr '-' '.' )
+BUILD_DATE=$(shell date)
+BUILD_HASH=$(shell git rev-parse HEAD)
+BUILD_MACHINE=$(shell echo $$HOSTNAME)
+BUILD_USER=$(shell whoami)
+BUILD_ENVIRONMENT=$(BUILD_USER)@$(BUILD_MACHINE)
+
+BUILD_XDST=$(PACKAGE)/vendor/github.com/rebuy-de/rebuy-go-sdk/cmdutil
+BUILD_FLAGS=-ldflags "\
+	$(ADDITIONAL_LDFLAGS) \
+	-X '$(BUILD_XDST).BuildName=$(NAME)' \
+	-X '$(BUILD_XDST).BuildPackage=$(PACKAGE)' \
+	-X '$(BUILD_XDST).BuildVersion=$(BUILD_VERSION)' \
+	-X '$(BUILD_XDST).BuildDate=$(BUILD_DATE)' \
+	-X '$(BUILD_XDST).BuildHash=$(BUILD_HASH)' \
+	-X '$(BUILD_XDST).BuildEnvironment=$(BUILD_ENVIRONMENT)' \
+"
+
+GOFILES=$(shell find . -type f -name '*.go' -not -path "./vendor/*")
+GOPKGS=$(shell go list ./...)
+
+default: build
+
+Gopkg.lock: Gopkg.toml
+	dep ensure
+	touch Gopkg.lock
+
+vendor: Gopkg.lock Gopkg.toml
+	dep ensure
+	touch vendor
+
+format:
+	gofmt -s -w $(GOFILES)
+
+vet: vendor
+	go vet $(GOPKGS)
+
+lint:
+	$(foreach pkg,$(GOPKGS),golint $(pkg);)
+
+test_gopath:
+	test $$(go list) = "$(PACKAGE)"
+
+test_packages: vendor
+	go test $(GOPKGS)
+
+test_format:
+	gofmt -s -l $(GOFILES)
+
+test: test_gopath test_format vet lint test_packages
+
+cov:
+	gocov test -v $(GOPKGS) \
+		| gocov-html > coverage.html
+
+build: vendor
+	go build \
+		$(BUILD_FLAGS) \
+		-o $(NAME)-$(BUILD_VERSION)-$(shell go env GOOS)-$(shell go env GOARCH)$(shell go env GOEXE)
+	ln -sf $(NAME)-$(BUILD_VERSION)-$(shell go env GOOS)-$(shell go env GOARCH)$(shell go env GOEXE) $(NAME)$(shell go env GOEXE)
+
+xc:
+	GOOS=linux GOARCH=amd64 make build
+	GOOS=darwin GOARCH=amd64 make build
+	GOOS=windows GOARCH=386 make build
+	GOOS=windows GOARCH=amd64 make build
+
+install: test
+	go install \
+		$(BUILD_FLAGS)
+
+clean:
+	rm -f $(NAME)*
+
+.PHONY: build install test
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..01d2527
--- /dev/null
+++ b/main.go
@@ -0,0 +1,15 @@
+package main
+
+import (
+	"github.com/rebuy-de/cost-exporter/cmd"
+	"github.com/rebuy-de/rebuy-go-sdk/cmdutil"
+
+	"github.com/sirupsen/logrus"
+)
+
+func main() {
+	defer cmdutil.HandleExit()
+	if err := cmd.NewRootCommand().Execute(); err != nil {
+		logrus.Fatal(err)
+	}
+}
diff --git a/pkg/config/config.go b/pkg/config/config.go
new file mode 100644
index 0000000..fbbd4b1
--- /dev/null
+++ b/pkg/config/config.go
@@ -0,0 +1,39 @@
+package config
+
+import (
+	"io/ioutil"
+
+	"github.com/sirupsen/logrus"
+	yaml "gopkg.in/yaml.v2"
+)
+
+type Config struct {
+	Accounts []Account
+	Settings struct {
+		CostCron      string `yaml:"costCron"`
+		CoresInterval int64  `yaml:"coresInterval"`
+	}
+}
+
+type Account struct {
+	Name   string
+	ID     string
+	Secret string
+}
+
+func Parse(configPath string) Config {
+	config := Config{}
+	var err error
+
+	raw, err := ioutil.ReadFile(configPath)
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	err = yaml.Unmarshal([]byte(raw), &config)
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	return config
+}
diff --git a/pkg/prom/model.go b/pkg/prom/model.go
new file mode 100644
index 0000000..018307f
--- /dev/null
+++ b/pkg/prom/model.go
@@ -0,0 +1,61 @@
+package prom
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+type Costs struct {
+	Cost                prometheus.GaugeVec
+	CoreCount           prometheus.GaugeVec
+	ReservationCoverage prometheus.GaugeVec
+}
+
+var C = Costs{
+	Cost: *prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Namespace: "rebuy",
+			Subsystem: "cost_exporter",
+			Name:      "costs",
+			Help:      "Costs by account and by service.",
+		},
+		[]string{"account", "service"},
+	),
+	CoreCount: *prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Namespace: "rebuy",
+			Subsystem: "cost_exporter",
+			Name:      "cores",
+			Help:      "Count of all virtual CPUs in all regions of a specific account.",
+		},
+		[]string{"account", "region"},
+	),
+	ReservationCoverage: *prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Namespace: "rebuy",
+			Subsystem: "cost_exporter",
+			Name:      "reservationcoverage",
+			Help:      "Coverage of running EC2 instances by reservations in percent.",
+		},
+		[]string{"account"},
+	),
+}
+
+func (c *Costs) SetTotalCoreCount(account string, region string, count float64) {
+	c.CoreCount.With(prometheus.Labels{
+		"account": account,
+		"region":  region,
+	}).Set(count)
+}
+
+func (c *Costs) SetCosts(account string, service string, cost float64) {
+	c.Cost.With(prometheus.Labels{
+		"account": account,
+		"service": service,
+	}).Set(cost)
+}
+
+func (c *Costs) SetReservationCoverage(account string, coverage float64) {
+	c.ReservationCoverage.With(prometheus.Labels{
+		"account": account,
+	}).Set(coverage)
+}
diff --git a/pkg/prom/server.go b/pkg/prom/server.go
new file mode 100644
index 0000000..47e5860
--- /dev/null
+++ b/pkg/prom/server.go
@@ -0,0 +1,23 @@
+package prom
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	"github.com/sirupsen/logrus"
+)
+
+func Run(port string) {
+	r := prometheus.NewRegistry()
+	r.MustRegister(C.CoreCount)
+	r.MustRegister(C.Cost)
+	r.MustRegister(C.ReservationCoverage)
+
+	http.Handle("/metrics", promhttp.HandlerFor(r, promhttp.HandlerOpts{}))
+
+	go func() {
+		logrus.Fatal(http.ListenAndServe(fmt.Sprintf(":%s", port), nil))
+	}()
+}
diff --git a/pkg/retriever/cores.go b/pkg/retriever/cores.go
new file mode 100644
index 0000000..21b942f
--- /dev/null
+++ b/pkg/retriever/cores.go
@@ -0,0 +1,82 @@
+package retriever
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/endpoints"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/ec2"
+	"github.com/rebuy-de/cost-exporter/pkg/config"
+	"github.com/rebuy-de/cost-exporter/pkg/prom"
+	"github.com/sirupsen/logrus"
+)
+
+type CoreRetriever struct {
+	Accounts    []config.Account
+	IntervalSec int64
+	Services    []Service
+}
+
+type Service struct {
+	Region  string
+	svc     *ec2.EC2
+	Account string
+}
+
+func (c *CoreRetriever) Run() {
+	c.initialize()
+	c.getCores()
+	go c.scheduleInterval()
+}
+
+func (c *CoreRetriever) initialize() {
+	for _, account := range c.Accounts {
+		regions := endpoints.AwsPartition().Services()[endpoints.Ec2ServiceID].Regions()
+		for regionName := range regions {
+			opts := session.Options{
+				Config: aws.Config{
+					Credentials: credentials.NewStaticCredentials(
+						account.ID,
+						account.Secret,
+						"",
+					)}}
+			sess := session.Must(session.NewSessionWithOptions(opts))
+			svc := ec2.New(sess, aws.NewConfig().WithRegion(regionName))
+
+			c.Services = append(c.Services, Service{
+				Region:  regionName,
+				svc:     svc,
+				Account: account.Name,
+			})
+		}
+	}
+}
+
+func (c *CoreRetriever) scheduleInterval() {
+	for range time.Tick(time.Duration(c.IntervalSec) * time.Second) {
+		c.getCores()
+	}
+}
+
+func (c *CoreRetriever) getCores() {
+	for _, service := range c.Services {
+		logrus.Infof("Getting cores for account '%s' and region '%s'", service.Account, service.Region)
+		var totalCoreCount int64
+		params := &ec2.DescribeInstancesInput{}
+		resp2, err := service.svc.DescribeInstances(params)
+		if err != nil {
+			fmt.Println(err)
+		}
+		for _, reservation := range resp2.Reservations {
+			for _, instance := range reservation.Instances {
+				if *instance.State.Name == "running" {
+					totalCoreCount = totalCoreCount + *instance.CpuOptions.CoreCount
+				}
+			}
+		}
+		prom.C.SetTotalCoreCount(service.Account, service.Region, float64(totalCoreCount))
+	}
+}
diff --git a/pkg/retriever/cost.go b/pkg/retriever/cost.go
new file mode 100644
index 0000000..847d830
--- /dev/null
+++ b/pkg/retriever/cost.go
@@ -0,0 +1,107 @@
+package retriever
+
+import (
+	"strconv"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/costexplorer"
+	"github.com/rebuy-de/cost-exporter/pkg/config"
+	"github.com/rebuy-de/cost-exporter/pkg/prom"
+	"github.com/rebuy-de/cost-exporter/pkg/utils"
+	"github.com/robfig/cron"
+	"github.com/sirupsen/logrus"
+)
+
+type CostRetriever struct {
+	Accounts []config.Account
+	Cron     string
+	Services map[string]*costexplorer.CostExplorer
+}
+
+func (c *CostRetriever) Run() {
+	c.initialize()
+	c.getCosts()
+	c.scheduleCron()
+}
+
+func (c *CostRetriever) initialize() {
+	c.Services = make(map[string]*costexplorer.CostExplorer)
+	for _, account := range c.Accounts {
+		opts := session.Options{
+			Config: aws.Config{
+				Credentials: credentials.NewStaticCredentials(
+					account.ID,
+					account.Secret,
+					"",
+				)}}
+		sess := session.Must(session.NewSessionWithOptions(opts))
+		svc := costexplorer.New(sess)
+
+		c.Services[account.Name] = svc
+	}
+}
+
+func (c *CostRetriever) scheduleCron() {
+	cron := cron.New()
+	cron.AddFunc(c.Cron, c.getCosts)
+	cron.Start()
+}
+
+func (c *CostRetriever) getCosts() {
+	for _, account := range c.Accounts {
+		c.getReservationCoverage(account)
+		c.getCostsByService(account)
+	}
+}
+
+func (c *CostRetriever) getCostsByService(account config.Account) {
+	logrus.Infof("Getting costs for account '%s'", account.Name)
+	svc := c.Services[account.Name]
+	respCost, err := svc.GetCostAndUsage((&costexplorer.GetCostAndUsageInput{
+		Metrics: []*string{aws.String("BlendedCost")},
+		// Getting the cost from 2 days ago is a workaround because getting data
+		// for yesterday yielded unstable numbers:
+		TimePeriod:  utils.GetIntervalForPastDay(2),
+		Granularity: aws.String("DAILY"),
+		GroupBy: []*costexplorer.GroupDefinition{
+			&costexplorer.GroupDefinition{
+				Key:  aws.String("SERVICE"),
+				Type: aws.String("DIMENSION"),
+			},
+		},
+	}))
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	for _, cost := range respCost.ResultsByTime[0].Groups {
+		amount, err := strconv.ParseFloat(*cost.Metrics["BlendedCost"].Amount, 64)
+		if err != nil {
+			logrus.Fatal(err)
+		}
+		prom.C.SetCosts(account.Name, *cost.Keys[0], amount)
+	}
+}
+
+func (c *CostRetriever) getReservationCoverage(account config.Account) {
+	logrus.Infof("Getting reservation coverage for account '%s'", account.Name)
+	svc := c.Services[account.Name]
+
+	respReservation, err := svc.GetReservationCoverage(&costexplorer.GetReservationCoverageInput{
+		Granularity: aws.String("DAILY"),
+		// Unfortunately there is no newer data then 3 days ago.
+		TimePeriod: utils.GetIntervalForPastDay(3),
+	})
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	coveragePercent, err := strconv.ParseFloat(*respReservation.Total.CoverageHours.CoverageHoursPercentage, 64)
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	prom.C.SetReservationCoverage(account.Name, coveragePercent)
+}
diff --git a/pkg/utils/utils.go b/pkg/utils/utils.go
new file mode 100644
index 0000000..fb5d7be
--- /dev/null
+++ b/pkg/utils/utils.go
@@ -0,0 +1,17 @@
+package utils
+
+import (
+	"time"
+
+	"github.com/aws/aws-sdk-go/service/costexplorer"
+)
+
+func GetIntervalForPastDay(daysAgo int) *costexplorer.DateInterval {
+	now := time.Now()
+	start := now.AddDate(0, 0, -daysAgo)
+	end := now.AddDate(0, 0, (-daysAgo)+1)
+	dateRange := costexplorer.DateInterval{}
+	dateRange.SetStart(start.Format("2006-01-02"))
+	dateRange.SetEnd(end.Format("2006-01-02"))
+	return &dateRange
+}
diff --git a/run.sh b/run.sh
new file mode 100644
index 0000000..f99c419
--- /dev/null
+++ b/run.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+set -x
+
+# This makes sure we don't spend a lot of money on API calls when the
+# process starts crash looping for whatever reason:
+./usr/local/bin/cost-exporter "$@" &
+
+while true; do sleep 365d; done