Chewie

You can buy one game, complete the sale. Then use the coupon to buy the other game. It works - I did it for Mario Galaxy 2 and Singlularity (which has a $10 card linked to its pre-order). So you can buy several games, one at a time, using the online gift card from the previous game. Sweet deal - buy them up before they change it to prevent you from doing it this way.