back in 1998 I had a bunch of items powder coated at Van Winn in chesapeak. good stuff. I think their minimum order is $100 I ended up doing my K-frame, spindles, Cross member, strut bar, some misc noncar items for $150
back in 2000 I had them do 2 trailer hitches, a tacoma's rear bumper and a strut bar for $150
But from what I've been told by them the price will be higher on items that require more taping/avoidance of sand blasting