I agree 200 clams is a lot. I was quoted 120 and that's in NJ, just outside of NYC.
But to say it doesn't cost a lot to powdercoat is slightly off target. The prep is time consuming if done right. Clean, blast, preheat then repeat till no contaminants pop out. If this is a pro shop, the oven and guns they use are big $$$$. They have to recoup that cost, plus the material cost. Although the powder is cheap, all the other items add up quickly believe me - tape, IR temp guns, racks, etc.
I can only powder coat small parts (that fit in a household oven) but I'm saving up for a bigger oven. If I ever get one, I'm going to offer this service to the forum.