expired LOW PROFILE! PC Gaming GPU AFOX Radeon HD 7850 2GB. $199 Plus Postage
Low profile video cards allow gaming in very small PCs (home theatre PCs, mini ITX cases, even old gutted Nintendo consoles).
They are usually much more expensive than regular cards (because they have to dissipate heat a lot better etc).
Apparently this is the most powerful Low Profile gaming card available.
Amazon UK have only 3 left, and are selling it at 230 pounds:
Even if this wasn't a low profile card, it's a decent price for a 2GB 7850.