I had Jet-Hot do some coating for me years ago and didn't do any checking locally. When I had these headers coated, they have a 3" tap off the back, I checked with Jet-Hot and they wanted over $500 to do them.
I checked locally and found a coating place that did the same ceramic coating and the tumble ceramic bead polishing and got them done for $350 and I didn't have to ship them anywhere.
I would look for someone in your area that does coatings. Maybe start with powder coating places and do some asking around. I think in most metro areas you'll find you can get them done locally.
Mine did dull up with all the road rash being thrown on them, but with a bit of rubbing compond they polished right back up. The coatings today are even better yet. Some are near chrome in color.
Don't get me wrong, Jet-Hot will do a great job, but so will someone else and possibly local.
I have a set of V&H Dresser Dual with their ovals and I was thinking of doing the coating on them, but just got lazy and didn't do it. All you have are two individual pipes and you should be able to get them done for that price or less if you can find a place. My new board track will have coated pipes, but not sure if I'll go silver or black yet.
Good luck with your search.