I thought so too. After you get the limit reached error, back out of the cart and try again. The coupon was already there, all I had to do was click apply and it worked.
This pairs well with UFC 2 if you need GS credit. It's $20 with GCU today only, take $10 off with this coupon, and trade over at GS for $25 base. You could get a possible $32.50 with RE7 preorder 20% bonus and PUR.
I think I found a small flip, at least if you have Best Buy credit. Tax might kill it though.
UFC 2 will be on sale at BB tomorrow for $31.99 w/ GCU and trades into GS for $36.80 with the Division 50% and PUR.