We all know that cost is important and we are all upfront about it, the ladies advertise their rates and the punters are free to choose or not based on price.
However! That should be the end of it. Using terms like value for money, and other phrases on here that most decent people shouldn't have to be told you do not apply to people; it is crass.
It is astonishing how many people show no signs of empathy, thinking about the people they are talking about.