I am so old and have been punting since the late 1980s. So old to the point where in those days it was rare to see Asian massage or FS girls at shops.
So old that Upmarket House in Crows Nest was brand new and had only 3 massage rooms then, and every time punters went, the manager got an entire line up out of the backroom, usually 7 or 8 Caucasian girls, and when you made your choice the girl came into the room with her own chosen music cassette (some of you young ones might not know what that is) and played it on the ghetto blaster in each room.
The music cassettes were used as a timer, because the girls knew when 30 minutes were up so you can turn around to get Part-2 started. You also got in the spa with the girl at the start before the massage!
In those days, every booking was 1 hour long. I don't remember ever seeing 30 mins and 45 mins. And some punters (including me) occasionally paid for 2 hours to be with their favourite girl.
To be totally frank, today the whole game is much more transactional. In the old days (25+ years) the girls used to talk in a genuine way about their lives and often you found out their birthdays (and brought gifts or gave big tips) and so-called GFE was more girl-friend-experience than what we get today.
And now having told you how long I go back, you can work out the "investment" amount I made over the years to enjoy myself.... a number with 5 zeroes in front of it.