I have just received 21 $50 Staples Gift Check from the zip drive deals few months ago. I thought I might get a rebate check but instead I got those "Gift Check" that's good for merchandize in store only. The worst thing is that it can not be stackable as one per customer per visit. Although they are nice enough to let me ring up seperately for each $50 but I'll still have to find an item around $50 that's a good sell on egay and do it 21 times. Anyone have idea or suggestions??