I remember first time I punt trying to look for a brothel near my place only with the help of Google. I end up at a quiet brothel with 1 young thai girl available. The girls is not really to my liking so i told mamasan i'm going to leave.
The mamasan gives me a better price but only for 20 mins. At that time i think it was only $90 for FS but everything covered.
So its possible if you go to a quiet brothel but def not possible for popular brothel.