The EVGA 8800GTS 320MB video card is a good choice and it's around 300 USD.
I would worry about shipping though as if you order every order separately instead of all at once, the shipping will be increased.
The Intel duo/quads would be having a price drop on July 22nd so you can take a look at those as well. I don't think they will raise the prices though so it doesn't really matter if you order them quickly.