exhaust coating options

I was looking at doing that ceramic coat thing. But the guy near here that does it wants $250. And I'm on a budget, that's my new rear gears! I got a can of VHT, so I'm gunna blast em, wipe em clean with acetone, spray, let cure for 48. Then run em through the proper heat cycle on my car. Might not reduce temps as well as the special ceramic coat, but I've always heard it works well.