I had mine sandblasted, cost me £35, then i sprayed them with primer. They've sat like that, dry stored, and stayed rust free for just over 4 months now (taken my time picking the colour lol). You could have them powder coated right after sandblasting and they'll come up gorgeous, i don't know what prices are like around your area but round here powder coating a set of rims costs around £50. Get your yellow pages out dude and get snooping (Y)