Z-Michigan
Member
Accurate Plating charges $245 just for a matte Cerakote refinish. David Clements charges $275. Couple that with the $450 (best I can do is $475) base price and you're already at $700.
Aftermarket finishes are expensive because each of them is done on a one-off basis, not production line, and the finisher has to inspect and clean each part, and maybe disassemble as well. In contrast nitrocarburizing treatments cost little more than blueing, and if done on the assembly line add trivial cost to the end product.
It's the nature of all aftermarket "upgrades" to cost more than if the factory had done the same thing on the whole production run.