What items qualify for advertising fees, and how are the fees calculated?

Associates earn advertising fees when visitors follow links from their sites to Amazon, make a purchase, and the item is dispatched. These links can be to individual products, pages of search results, the Amazon home page, or any other page at Amazon. Associates can also place product search boxes on their sites. Please note that advertising fees are calculated on the sale price, not the list price, of each qualifying item. You earn advertising fees according to the Advertising Fee Schedule.