Our definition of mainstream video cards encompasses the $100-$199 price range, and is really where you'll get the most bang for your buck. This is where you will find the latest mainstream video cards, like the Radeon X1600 Pro/XT, Radeon X800 GTO, and GeForce 6600 GT & 7600 GT, along with a few higher-end products that have been replaced at the top of the food chain (like the Radeon X800/X850), and have then dropped in price.
The mainstream video card list is usually where we see a few noticeable price drops mixed in with some high-end cards dropping below the $200 mark and entering the mainstream market. This month we certainly see a wide range of price cuts, but amazingly, only a single high-end card dropped below the $200 threshold. That board was the very specialized Gigabyte DUAL GeForce 6600GT PCI Express, which combines two GeForce 6600GT cards in an SLI configuration, and fell $34 this month. Otherwise, it was a pretty wild week for mainstream video cards, as there are significant price drops at all budget levels.