Game codes can be sold, did it with the stuff from BF. Make sure to put no returns accepted in ebay though.
Knock 10 bucks apiece off each and you'll probably be able to sell them easy, especially since they're not even out yet. Brings the cost of the card down to $125, which I consider to be a good buy.
Yep. Got a HD 7770 on black friday for a total of $35 after the rebate and selling the game codes.