We are pleasantly surprised to report that Nvidia managed to get some 8800 GT cards to Newegg, and as of press time U.S. purchasers can order two overclocked XFX cards: one for US$290 and a second for US$310. They are very expensive but at least they are available.
The US$260 cards are still out of the stock but it looks like more manufacturers will have them available on about the 4th or 5th of November.
You can find the list of the cards here and the supply should recover early next week; at least, this is the plan.
8800GT out of stock in U.S.