How long is a piece of string? To me 'high class' is about 2 dress sizes smaller than me, stereotypically 'feminine + pretty', is elite (charges on average ?200+ by the hour), doesn't take less than a one hour/two hour booking and is far more of a 'companion' there to stroke his ego rather than actually converse with him. 'Low end' to me is advertising primarily via mediums like the Sport, more of 'splash and dash' type (ie quickies et al), possibly in the parlour scene, charges anything from ?40 15 min quickies to ?100 an hour? Thats my interpretation, but someone else will have another opinion. I'm not in either market so I have my own preconceptions. And I'm sure someone who does charge ?100 an hour will say 'I'm not low end'/someone who charges ?200+ an hour will say 'I'm not high end' which is also true...
The reason I say that is because each person has their own environment to work from. You have to factor in things such as basic overheads. The cost of living can vary massively across the country, and you can have far more competition, so your rates have to reflect that.
For example: where I used to live, I could see maybe 4-5 clients a week and live an extremely comfortable life. That was having a 2 bedroom apartment in a nice area, where I was the sole occupant, charging the average rate for a girl of my looks/services for the area. Where I live now, I would probably have to drop my rates in order to reflect the market/other providers' prices and see more clients to give me the same standard of living I had became accustomed to. By my own definition, I would have moved into a more 'low end' bracket when thats not necessarily the case. Its just how I fit the scene I am part of now. Thats what I meant by saying we all have our own preconceptions of what defines high end/low end.
Bear in mind other girls charge extra for some services, so one girl may charge a flat rate eg ?140 for full personal and an extra ?20-40 for CIM, ?30-50 for anal, whereby the client can just pick and choose. Other girls may charge ?200 an hour, but she includes CIM/A blabla speciality as part and parcel of that.