I have an Nvidia Evga GT620 (card only) that came in my wife's computer. I replaced it as soon as we got it so it's practically brand new. First $15 buys it. I'll pay shipping.
Also have an ATI/AMD MSI R6670 (original box and disk) that I just replaced out of my computer. Used it for about a year and a half. Great low budget card that runs AH pretty darn well. $35, I'll pay shipping.
Or buy both for $40.