Powerup Rewards - potential money maker if you frequent gamestop! check it out!
I ordered that Borderlands comic for ~10k points (I think thats like $1000 I had to spend in there lol, maybe not) but whatever, most of the rewards aren't exclusives or anything.
Anyway, its an exclusive variant (one of only 3000 printed), I just got it this morning and slapped it on ebay for $48 - it sold within 4 hours. I'm gonna put that cash toward my PS4 :] Hell of a lot more than any coupon you could get directly with the points.
It sold so fast I bet you could probably get over $60 if you waited...anyway, just a little tip!