Photo by Stones 55Like the other shopping deals, receive 2% back on your purchase through Ebates, 3% back from Upromise, or 3% from Mr. Rebates. Not a member of any of these sites? It's easy and free to join. Just click the cash back shopping site you would like to use, register, then search for the store you would like to shop. Shop and start earning cash back for doing it!