Just bought Call of Duty: Black Ops, and it comes with a voucher for redeeming the First Strike Map Pack on the XBox Live Marketplace. Willing to sell it for $10 through PayPal payment or trade it for 800 MSP.
I have no idea why they list this game as a pre-order, as it has been out for quite some time, but it says you can pick it up starting September 13th for $20...