I noticed a change from Sauna with entry fee, towel and locker key for massage with extras, to then paying for time with a particular girl in a room coincided with girls details being posted on the then relatively new internet.
I don't dispute the massage parlours/saunas probably still exist but they are no longer for me.
The internet gives us so many choices, better than finding a number from the back pages, phoning (from a phone box - remember them?) a madam who sounds like she smoked 40woodbines a day, asking for ladies descriptions. How pervy is that, when I can discretely email a girl or phone her direct.
Sheffield had many massage parlours, which was real punting on my doorstep, yet I soon got into the Manchester brothel scene because they had photos of the girls and no entrance fees. WFB, Buntys, The Toucan Club were popular at the time (mid/late 90s) then Sandy's took the lead with a decent website, rooms and a rota that suited my tastes.
However the % these pimps take from the girls puts me off.