Plato said, "Necessity is the mother of all inventions." He must have been talking about the guys at One Block Off the Grid, which is a cooperative of sorts for buying photovoltaic solar panels at a group discount. One of their staff members was running into issues trying to run Adobe After Effects on a slower Mac, so they had another staff member -- Kalvin -- build a fast hackintosh in the Amazon cardboard box that all the computer parts came in.
That price doesn't include the labor involved in putting it all together, and it originally had a rather odd power switch, which was a standard jumper stuck on the end of a plastic cable tie. The computer itself has pretty good specs, with a 2.66 Intel Core i5 CPU, a 1 TB hard drive, 8 GB of 1333 MHz DDR3 RAM, and an XFX Radeon HD 5770 1GB DDR5 Graphics Card. To run Snow Leopard on this computer, Kalvin used iBoot and MultiBeast.
As noted on the 1BOG blog, "this procedure may potentially violate Apple's End User License Agreement for Mac OS X." On the other hand, it's a great way to get a fast computer and not spend a lot of bucks.