Possibly me. I mainly do hour long bookings, despite what people think prices are more expensive than say 5 years ago, but cheaper on average than around 10 years ago back then it was difficult to find a girl for less than £120 and many were £150+. It's simple if they are out of what I am willing to pay I simply don't book them, it's their loss. The days of EE girls at £50 an hour are long gone and yes they did exist, a number of popular ee girls are now £120 like Busty Izabel, at £100 I could have been tempted, at £120 there's other girls I would rather see for the same amount.
Back then I did a few bookings with McKenzies/IK and it was 150+. I had an AW account since before that time but don't think it was much use back then, just camgirls maybe? Mostly blonde escorts and vixen-escorts.com and there was almost nothing cheaper so it made sense to go with the agencies. From what I remember services were pretty much on the low end at that time too.
After 2008 was probably when AW started getting more useful and I remember EE girls who were maybe £80 and did a great service (almost always CIM, sometimes anal) and occasionally you would get them doing their last week at maybe 50-60. 100 was about the standard for 90% of indis where I was, just nobody really had cash.
Now it seems the difference between 100-120 is whim really. 150 seems expensive and I guess that loses business unless they have something special.
Funny you mention Isabel. I saw her a year ago and would love to go back but she's 60/HH and pay a ton extra for CIM or 120/hour all incl. If that was 60+10 or 100 then she'd have had more of my money. She's a good SP but she isn't amazing and the one thing a repeat trip will never have is being the first time
Oh and just for balance I guess there are girls like Kendall & AngelWings who have dropped prices a fair bit the last few years as they got older. You have to presume they aren't doing as much business as they used to but in all liklihood give a better service than before?