Read up on it here: http://www.fatwallet.com/forums/hot-deals/838081?highlight_key=y&keyword1=ebay Pretty much, you can get up to $200 back per transaction (Buy $800 Buy It Now and receive $200 credited to your ebay/paypal account - forgot which one - 60 days later). You can do this 12 times this year, and get up to $2,500 back. Here's an example of what I might get: Item you're buying: 4 X BSN SYNTHA-6 ANY FLAVOR Syntha6 GREAT DEAL Buy It Now price: US $104.95 Shipping and handling: US $10.95 -- Standard Flat Rate Shipping Service. Additional services available. Shipping insurance: US $1.49(Optional) Payment methods: PayPal, Money order/Cashiers check. Safety Tip: Never use Western Union to pay on eBay - you can't confirm who picks it up. PayPal has up to $2,000 in buyer protection. See eligibility US $26.24 So after I get credited the amount in 60 days, 11.64lbs of Syntha 6 would effectively cost $89.66 after shipping. You get the idea.