It's all relative on how many people the providers will see and how much they charge.
There are gals in Vegas that charge $1,000 an hour (and the quality was fantastic) and can't believe women only charge $300 an hour (or $260 in this case). Some women will only see 1 guy a day, some 10. Then there are some gals that charge $150 an hour that are fantastic.
I've paid a lot for an hour and it wasn't a great experience. Price along with anything is always a factor as with anything in life.
Stated above, it's a slippery slope. What women charge is what THEY think is fair for their time. Again, some think others charge too much, others think they charge too little. If I have a great time and it was only $100 an hour? They will get a huge tip from me. If I pay $300 for an hour, have a great time, that's about my max to pay for an hour (not my means, what I think is fair) and generally no tipping even if they blow my mind.