I agree with Brutus.
Those prices are not from 2010, and you know that.
And as long as the girls keep making so much money that they don't know what to do with it, and end up buying 100+k cars and 10k handbags, I cannot really see a reason why those rates should go up.
And let's not forget, most of these cash earnings never appear on a tax return.
If a girl goes above and beyond, or the play-part of the session is way longer than usual, I can reward that with an extra tip.
Actually, I tried that with one of my regulars recently when our session ran like 15 min over, and she didn't even want it. And those are exactly the girls I will keep seeing.