Oooh I thought it was already out, my bad.
Is that generally safe to buy people's used cards? I don't really know too much about this kind of stuff. I just know that most enthusiasts like the kind on GAF OC their cards to hell and back. Would that decrease the life of the card?
Honestly, I'd just check Slickdeals every day. There have been recent deals on the GTX 480 and 570 that have been cheaper than buying used on ebay. Ebay is kind of a scam for used parts (although a great place to offload yours).