I think I've heard of them.
*looks*
Ah, Navin. That's definitely familiar. Yes. Heard some horror stories about him here on Dakka. Here's a thread from The Distant Past (
tm):
https://www.dakkadakka.com/dakkaforum/posts/list/0/436240.page
So yeah, they're established. Had some nightmares, but everybody does, sooner or later. Legit enough it seems to me.
Edit: Looking at some of the reports from back then though. Eesh. I think I'd avoid. Sorry if I was too positive; didn't spend time reading around. Definitely caveat emptor.
Basic rules with booking commission painting:
1) You Get What You Pay For.
Consider the living wage for the painter. Expect to pay at least that. Expect a decent high-end tabletop job to run at around 2 hours per model. Don't expect to spend less than an hour a model unless you want it to be gak.
2) Communicate and agree your needs IN ADVANCE.
Give as much information as you can. Refer to existing pieces in the painters' portfolio for standard of finish etc.
3) Consider location. YOu may need to ship to/from the painter. It can get expensive. If declaring the value of the paintwork in the value of the returned work it can be REALLY expensive for customs etc.
In short, be clear, be sensible and you should be OK.