Wow
you realize for $300 you can buy a brand new sapphire Dual-x 7970 right? Or for a few more dollars a 7970 vapor-x if you prefer that.
Where?
go on slickdeals.net and search 7970 or 7950 on a daily basis and you will see a ton of cards for cheap. They just ended / extended a rebate so the next iteration of deals is coming soon.
So far recently the best deals I have seen are 7950 Sapphire dual-x for $239 and 7970 for $298.
$200 7950 for black friday I would assume, $250 7970 maybe.