Oh your so cynical Dani, but nevertheless spot on with your assessment I think. 
I am yes as I have seen the results of this type of offer many times. The punter ends up paying out thousands for probably one very boring punt and then she is always busy or sick so cant see him until her profile disappears and a new one pops up.
Its easy to offer bookings for something else but once the money has been paid then the girl invariably forgets she has already been paid and feels like she is working for nothing as is not getting cash on the day each time so finds it easier to disappear.
Why does she not just work a full day for a few days and pay for her own boobs? Working full time for a week will get enough to pay for a set of tits and if she works full time for two weeks without buying handbags or shoes she can also afford the time off afterwards that will be needed.
I needed a new kitchen a couple of years ago so worked full time 7am -8pm for two weeks to pay for it. If I can always have enough money to cover emergencies and time off or holidays then she can afford boobs as I only work part time and can do it
Why ask a client to pay in advance when she can easily earn it herself. Simple she doesn't want to pay for it and thinks its easier to con a punter into paying instead
