I hate to think about it.
Just the computer, $2100. Add monitors, keyboard, mouse, speakers, and printer, $2850.
Good? I think it is freakin' awesome. Fastest computer I've ever used.
A Dell Studio XPS 9000 spec'd close to the same would be cheaper, but I wouldn't know the brands of the components, and I'd have to deal with all the software Dell loads up. And the most important part, I got to build it myself.