The blue Oyster Bar, Bophut, Chaweng, no website, freelancers
there are also 2 clubs and one massage parlor
use app - Blued (#1), Hornet (#2), Grindr (#3)
Yeah, there are just bars where gay people get together, but according to my friend there are plenty of mbs in the apps.
I'm not really into paying sex, so don't know about the rates but most probably cheaper than in Bangkok.