Just snagged an EVGA 02G-P4-2680-KR GTX 680 for $509.00 on Newegg. The Fricken Things were sold out within 3 minutes after I clicked "Submit Order".
It was a stroke of luck... EVGA auto-notified me of their Superclocked model avaialbility, and by the time I had entered my CC... they were sold out... so I checked Newegg (even though they were supposed to auto-notify me as well, but didn't)... and snagged the stock-clocked puppy as soon as I saw it was in stock.
DAMN THEY GO QUICK!!!