"if it sounds too good to be true...."
I know I've always been tempted to buy them but after a friend bought it and had a couple parts fail after only a few months of use and eventually break down totally within the year, I figured that was just not a good idea. I mean if you think about it, the reason they can charge so close to build price is probably that they don't enjoy putting time into their systems to make them great....or they get extremely crappy parts maybe refurbished and covered in some agreement somewhere that gets them off of a legal hook.
Try taking a look at AVA Direct, Maingear, and Velocity Micro.
Do know that I've had an AVA Direct myself, broke down and gave me numerous issues however, on a larger scale almost everybody likes them so what can I say.
The CEO did call me quite a few names though