clipped from: 
We're releasing a API set for our MeCommerce application. As a mashup developer myself, I prefer API sets to widgets. Here it is:
http://mecommerce.goodstorm.com/api/v1/
Thanks and have fun. Please let us know what you can do with this API and the content we have. To answer a question, no this is not the Amazon catalog, it is the GoodStorm catalog and it contains millions of CDs, DVDs, games and books.
Caio!