OK for an NNG PRS copy, expect to shell out at least SGD$2.5K... but thats a fraction of the cost of what you'd pay for a PRS private stock... which is the only PRS he can fully copy since he can't reproduce the PRS logo... but he can reproduce the PRS private stock headstock bird.
NNG is located in Bangkok, i'm told that the place is just slightly outside the city. never been there before though, but i might just check out the place when i next go up to bangkok. contact details are on the first page, just scroll down. this guy is ok with email, apparently.