Yeah the HD3870's are around £170 here and when you can get the basic eVGA 8800GT for the same price with free shipping off Novatech it's quite obvious that people with go with the power!
EDIT: Because I want to live in the US in the future I looked so see how much a car was, I saw the difference between the basic Honda S2000 and it was £7000 cheaper over there! Now that's one hell of a price difference.