Booman, don't know what you mean .. Sorry if I was unclear... This is the setup .... (as much as I know off)

1. They use two or more entities (LLC ...etc)
2. Entity 1 is posting the item on Ebay ..... (including different methods to stuff the user on Ebay or on another page)
3. People would bid and eventually buy the item (thus revenue from stuffing)
4. Entity 1 would buy the item through the amazon aff. link of the second entity and ship it to the buyer (revenue from the amazon aff. and the sale on ebay)
5. While paying on Amazon for the item, entity 1 uses a 2%back credit card ...

Hope that makes it clearer now ...