Fully nude strip clubs are now illegal in Thailand, though some continue that practice on unpoliced nights in Pattaya and Bangkok. The town in which I live has no strip clubs and only a very few small houses of prostitutes, but about an hour away is a big city with a few 'soapies', where the girls sit in skimpy clothes behind glass with numbers pinned to them, and you can order them upstairs for massage, joint bathings, and sex at about $40-60.
So basically, it's a gallery showcase before you order the sex.