I used to have a regular girl in her early 20s who charged £650 for an overnight (33% off her normal rate as I was a regular). However, morning sex was extra which I realise would be a deal-breaker for many but didn't bother me as I'm not a morning person. In retrospect, she was probably not the bargain I thought she was - cracking body though and up for most things including swingers clubs and FFM duos.
Now, I don't consider any one over £150/hour. The only exception would be if the girl was offering a very specialised service.
I had a £150/hour punt the other day (will review her when I get time). While it was a perfectly good punt I couldn't help thinking that, for roughly the same money, I could have gone to LMP and spent twice as long fucking half a dozen stunners.
Think I will research some of the budget options in the £100/hour bracket.