Do ANY exist? Interesting if so, but chrome is not an easy process,
Copper
Nickel
Chrome

Is the traditional 'triple plate process' and it's rather nasty, chemically speaking.
hexavalent vs trivalent, safety concerns, waste concerns.

I would think the EPA has effectively squashed any back-shop platers but if the chemicals can be procured then the only thing stopping someone would be the law, and that's a minor hurdle for some people.