The point that @CharityShopChic makes is valid. Many women (shown by this forum) are dismissed by GPs who won't give them HRT (for various reasons) or who aren't experienced enough to prescribe what's needed.
In desperation, women turn to private drs. Unlike what @Janieread says, many women can't get any HRT from their GP,, which is a disgrace.
I've never used her clinic but I do gather it's expanded hugely from when it was launched and, maybe part of this is that the personal touch isn't quite there now? I can't say. When she started, there was just her and a couple of other drs.
As for the fees - most private consultants' fees are around £300 for the first appt, which can last 45-60mins. After that, shorter appts are usually 30 mins and half (ish) the cost.
If everything goes well with treatment, no one should need more than two appts in a year (that's the first one and a 2nd one at around 3 months.) Legally, they have to do a review annually (for all meds.)
There's a huge range of what private drs charge @Ittybittytittycomittee
Some are happy to offer 5-10 min phone appts for no charge, for a quick question, others want paying for every thing. And then there may be costs for blood tests etc to factor in.
I think her fees are on the high side, possibly, as they are charging consultants' fees, when they are GPs or nurses.