Amazon DevPay is an easy-to-use online billing and account management service that makes it easy for you to sell an Amazon EC2 AMI or an application built on Amazon S3.

Getting Started Guide
Introduces you to Amazon DevPay, helps you set up an account, and walks you through a simple example to use DevPay for the first time. Also provides tips and links to advanced product features and resources.
  Developer Guide
Provides a conceptual overview of Amazon DevPay and includes detailed development instructions for using the various features.

For older versions of this documentation: