I agree with you, A New World... the experience she gives is pretty out there, and I came away thinking "bloody hell, that was something I won't forget in a hurry". Ultimately, isn't it human nature for people and businesses to charge what they think they're worth, based partly on "market feedback"? It applies across the board, whether you're an independent escort, an uber-luxury hotel in the Maldives, or an iPhone. If you have a service or product that people rate as among the best in the market, you can charge a premium for that. If she had a load of lukewarm feedback then sure, it would be silly of her to raise her prices. But her feedback on UKP and on AW is almost entirely outstanding.
So - and I repeat, for the avoidance of any misunderstanding - while I don't ENCOURAGE price rises by WGs (or anything else for that matter), I can totally understand WHY she's done it, and I don't altogether blame her for it. And, she's still well within what I would call averagely price for Central London. It's not like she's gone for £200/hour with no 30 minute rate, like many so-called "elite courtesans" do..... in the end, would I rather pay £80 to see her for what I know will be an awesome time, or pay £60 to see someone who - law of punting averages suggests - will be so-so at best, and terrible at worst?