The most I have paid is £150 for the hour on three occasions, my normal punts are £60-80 and very much spur of the moment:
One was with:https://www.adultwork.com/1501076
I recall I paid more for humiliation etc, this was planned about two weeks in advance with text / emails covering what I would like to do. Note this girl is amazing, I just cant normally plan that far in advance.
One was with a girl now retired, fantastic experience again included an element of humiliation (I went through a phase - which comes back from time to time.)
The other was with Chloe of Feline Escorts over in Nottingham my first and only out call to a hotel, the planning, nervous excitement and build up made just made the whole experience, added she was stunning and amazing. I understand she works under a different name now (see link below) https://www.adultwork.com/2567538
She was more girl next door, very natural look when I saw her and the photos dont really do her justice (not sure why they think us blokes prefer the heavy makeup look.)
Planning these expensive punts really adds to the whole experience.