Solid deal. Wish I was risky enough to put the 7800GT OC on eBay and get 200ish out of it and spend the extra hundred to upgrade to my final DX9 card. If I had 300 in hand I would get one probably, but I don't so time will tell.
GTX's are fetching $250. You should get about $170.
I should sell my x1800gto for $200 and get this for another $100 bucks.