Honestly, I would make it clear that you're looking for an hour of just straight sex. As much as people like to pretend that they can go for hours, we're not really interested in that in terms of a paid session. The typical session starts off slow, one shot out of the way, then another a while later. Being, jack hammered for an hour is annoying. It's hard to give an accurate price too. Because you can't charge everyone the same like what you were expecting is different than the typical session. If someone lets me know that they want me to be doing something. Every second of that hour, i'm going to charge them double. I will do it. I have no problem doing that. But i'm going to charge them accordingly. If someone is laid back and wants to go with the flow, i'm not gonna charge them a lot of money. She's just used to easy laid back sessions. What you are asking for is not what people typically go to see a woman for. By the time they decide that they're going to hire someone, they are all horned up. They come really fast and then they need time to work up to the second shot.
To avoid that in the future, I would just tell your provider that you're looking for an hour of straight sex the entire time and i'm sure you're going to find some people will just say no. But you're all so going to find some people who will be willing to do it, but for the right price.
We're not all going to charge everyone assuming they want what you want, we're going to charge them according to what most people want. That's cumming within the first ten minutes and then another shot near the end. She never wants to see you again and she doesn't care if you ever come back. I'm sure you don't really care, but When everyone asks very little, but other people ask for everything it gets frustrating. We don't all know the sexual habits of every single person but most people aren't requesting that and that is honestly not a great way to have sex. Not just with you, but in general, it's not a great way to have sex and as much as you don't care about the pleasure of your provider... You probably should though because if she can't stand it a normal woman can't either.
I would say that if the woman you're paying can't tolerate it... You should probably seriously reconsider how you're having sex.