I work at a powder/paint shop in MN but we don't do rims, ect... I always tell people to call East Coast Powder Coat Inc. in Maryland to get an estimate (410) 287-6200. From what I've heard it's usually between $100-$180 depending on what color you go with, white is a standard color so I'd guess it's on the lower end of that range. If you have your rims powder coated make sure they put a clear coat on them (powder clear or liquid clear).