from bare metal up "material cost"

I didn't hear anyone say anything about paint brands. If it is PPG, Dupont or another top shelf brand, then $4,000 sounds about right. You better check to see what you are getting. By the time a painter uses epoxy primer, high build primer, sand paper, solvents, activators, paint ($600+ per gallon for the good stuff), clear, polishing supplies, etc., you can get to $4,000 pretty fast with the good stuff. If you are paying $4k for materials that are not top shelf (even though some are quite good), that is NOT a decent price.