My requirements are this: 1. Do a search on Amazon to determine the list of products using keyword provided by user. - Works. 2. Add the selected items to shopping cart. - Works. 3. Checkout the shopping cart using Amazon FPS API/ OR / checkout the shopping cart using single-click/1-click method highlighted on Amazon.
I am able to get stuff from amazon listed on the portal. Add to Cart functionality is also working fine. But I am not able to checkout the product (amazon products) via FPS. I want to do something like single-click checkout or payphrase for the entire shopping cart. But it seems checkout with amazon works only for a single product. When I increase the number of products on sites like http://www.buy.com/ the option of checking out using Amazon just goes away.
I am finding it really hard to figure out how to achieve the last step. Any advice guidance tutorial links would be really helpful.