I'm looking to get a new PC and when I price the individual parts I would want to use to build it, I can't get anywhere near as cheap as complete units are being sold by places like BestBuy. I had always thought that it was cheaper to build your own but I just can't find a way to build what I want for any cheaper than buying a complete PC. Could someone clue me in here? Am I overlooking some glaring difference? I'd assume that a Gateway unit from BestBuy wouldn't have as nice of a power-supply or other parts as I might buy myself, but c'mon, it seems like they can sell a tower for cheaper than it would be for me to just buy the motherboard and CPU, much less anything else that goes in.