looking for amazon api professional
YOU NEED TO KNOW THE API ALREADY :)
and u need to have skills in css/php/frontend gui
build something like price comparison portal in PHP
similar to for example [login to view URL]
all details from api need to be displayed on site, like for example filters, price range, brands, manufacturer, categories, product details, top products, search,...
in 2nd step more apis should be easy to include like ebay api, [login to view URL] api,....