I'm sure a couple do , but you won't want to buy it in trinidad! its better to find someone with a credit card , and a skybox to order it for you . You'll save half the price or more . Also , give thought to getting a 6600gt , they are much cheaper (50-100 US less)and 99% the speed of a 6800 non ultra .
If you HAVE an agp mobo, stick with it for while. wait till toothing pains for the X2 are over - i.e. mobo bioses aren't burping up errors, and for amd to bring out cheaper ones - only 2.2 and 2.4GHz atm. a 2.0 should fall nicely into the 280 to 320us range, maybe lower if they play cache games with that speed as well, taking the price of the 3500+.
Also AMD is releasing a low end dual core opteron on socket 939 , with clock speeds starting at 1.6ghz and ending at 2ghz , it should help fill in the gap between the athlon 64 and X2
It is easy to find benchmarks on the latest and greatest hardware. Much more difficult if you're looking for middle road performance indicators.