because it really depends on the individual and his needs that will determine what I will charge. A guy who is activity oriented meaning he demands x amount of sex with an acrobatic monkey mentality will pay more than a guy who wants a relaxing, go with the flow type overnight where we play, have dinner, come back and relax, play some more before bedtime, actually sleep, then wake up with more play and breakfast. Literally the latter will pay HALF of what I would charge other guys who just want a machine.
Add to that overnights are very intrusive and personal...actually sleeping with someone is more intimate than letting a guy cim to me, so many of us charge more for that reason alone. You really have to put a lot of trust in a person if you are able to actually get sleep, and that's not something many of us to on a regular basis.