I've been wondering lately if there's a niche market for custom flashed mining cards, where I personally find the highest stable core clock / voltage / fan combo and flash the bios to make it permanent, so that a would-be-miner simply plugs it in and goes... (although I'd hate to be the poor sap that bought it from him on ebay and wonders why his games run at half FPS because the memory is at 300 MHz instead of 1000 LOL)
Yes a large "BITCOIN MINERS ONLY" tag would be essential here. That is probably not a bad idea given how many newbs such as myself are flooding into the market casually. I'm sure demand for such would drop off whenever mining difficulty reaches its boiling point but we're not there yet.