As the title says, i managed to grab these coupons a couple weeks ago and the code is the same on each sheet so its a generic code. I have posted this in a couple of threads but i think it may be best to make a thread on this.
Basically the 30% bonus coupon i think is the best offer as you don't have to trade in towards any preorders and have to go back to cancel later. Now from what i read it looks like its just one game trade in per coupon. It is also limited one per customer but i don;t think you would have problems using it at multiple stores.
There is also a 10% off preowned code but i don't think it beats the BD coupon.
If anyone wants to try it out go ahead and post your results i am curious to see if this works for people.