Personally I do all my own body and paint work, but about a month ago, my friend took his '90 300ZX to a body shop to see how much they would charge him to do everything from sanding, preping and painting and they quoted him $4500. That was for normal two stage paint, but them doing every bit of the work. I think the best thing to do would be to find someone that owns the equipment personally and a lot of the time you'll just buy the paint and a case of beer and you have yourself a paint job that looks pretty good. Just make sure they drink the case after they paint your car!