The fact I live in a punting wilderness means there are very women worth even paying £12 per hour let alone £120!
It's for that reason punting is getting rare and is always with the a new or touring girl. That means I only ever really do half hour punts incase her service is shit and I set my limit at £60 to £80 depending on what's included now.
If there were a few decent regs to pick from I'd be willing to spend a little extra and stay a little longer but never on a first punt.
The one thing I've definitely noticed though is the price of a quickie has rocketed! It used to be £40-£40 now it seems to be £40-£50. I used to punt a quickie first to test the services then go back for a longer session another day but not any more I'm afraid.