The Product Purchase Flow
To purchase your product, customers first click the purchase URL that you present to them (you receive the URL when you register your product; for more information, see Registering Your Product). They then go through a series of web pages that are branded with Amazon Payments. The following example pages mention several fictional companies and products. For example, a company called Skysonsa, Inc. is selling a product called Sky Storage.
Your customers are first prompted to log in with an Amazon.com login. The page indicates that you've teamed up with Amazon Payments to bill for the product.
Your customers are next presented with the product details you provided when you registered the product with DevPay. If you have a monthly charge, a one-time charge, or both, the initial fee the customers are charged at sign-up is displayed in the top right corner of this page. The page also displays information about the credit card on file that will be used if the customer decides to purchase the product. At the bottom, the page includes links to the Billing Services Agreement and the terms and conditions you specified for your product. If customers want to purchase your product, they click Place your order.
After they click Place your order, the purchase is processed and the browser window splits into two frames. The top frame contains the activation key. The bottom frame contains the redirect URL you provided when you registered the product with DevPay.
At this point, the customer has purchased the product and can begin using it.