I don't remember her ever being as low as £150 per hour, but I remember first meeting her back in 2013 at £250 per hour.
I agree £1,000 is an extreme rate and one the average punter wouldn't pay... but I'm pretty sure that's the reason she does that. She's probably making plenty of money via OnlyFans, and a few millionaires/billionaires who won't care about dropping four-figure sums of cash on a bit of fun for the evening with a successful porn star (argue the success part as much as you like, but she's got quite a big fan base).
Would I pay a grand to see her when I'm making £70k a year? Definitely not
Would I pay a grand to see her if I made a million plus a year? To be honest I probably would