Ebay purchases are free to list, and only take a final value fee if the item sells. As a buyer I can "return" the item within 60 days. So since the Ebates payout is in 30 days, I'll know then if I get the money.
If I don't, I end up being out nothing since Ebay returns the Final Value Fees. (I'm an Ebay aficionado, I made the first and top selling Ebay and PayPal Fee Calculator for the iPhone -
http://itunes.apple.com/us/app/ebay-...370806576?mt=8)