Me, personally, would never buy Video card cheaper then $200, because I personally think cheaper would be just junk, and I will need upgrade in a year.
Over year ago I bought 8800GTS320 for $300, and now already thinking on upgrading it.

same with mobo and CPU, I get high quality and with good word on net.

cheap stuff have way too small life expectancy, made out of cheap components and don't work more then few years under heavy work load.

but that just my opinion and my luck with cheap stuff ever bought...