I got my case and processor from e-bay, but the motherboard I bought there was crappy so I bought another one and everything else new. My wife estimates $800 total, but that sounds high to me. I'll add it all up when I'm done or else I'll never finish. How much was your LCD? Mine came without a case, so I slapped one together with fiberglass. It ain't pretty, but it works. My tower is now 2/3 as tall as it was in the picture. I took the dremel to it and got rid of a bunch of wasted space. I'll probably chop it up some more later on so it will fit under the passenger's seat. I highly recommend Mp3Car.com as well. I want to mount my LCD on a gooseneck so I can move it from front to back so the kids can watch DVDs on the road. Pilot Pivot is also great for turning the LCD on it's side.
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"The trouble ain't that there is too many fools, but that the lightning ain't distributed right."
Mark Twain