I recently built a computer and bought 2 GeForce 670 ftw's and didn't realize there was a promotion for getting Metro Last Light free. I did however purchase Metro Last Light at full price but found the promotional e-mail today. What can I do with this now that I have the key code? E-Bay? Trade it via Steam? Whats the best way to get something out of this as im kicking myself right now lol but love the game its awesome so still worth it. Thanks in advance for any help!