To a certain extent, rates are set to attract certain clients, as much as to serve as a signal to the potential clients as to what they can expect. Someone who spends a lot on themselves in other ways (5 star restaurant, 5 star hotels, more expensive lifestyle and homes) are going to spend in that 500/hr (or more range) because they are reading the signals. They can be guaranteed (probably) the sp will be in a location that they will be comfortable going to (whether condo or hotel), that she will provide the more luxurious surroundings he is accustomed to. She will be able to afford the attention to details, whether it is simply knowing which are better types of wine or just serving them. For regulars, she probably give expensive gifts for birthdays and/or Christmas/holidays.
Most people who do more shopping than I do know there is a big difference in the quality of a designer made item and a knock off or a dollar store equivalent. The clothing is constructed better, and with better quality fabrics. It fits better. Accessories last decades because they are made with more attention to the details. For someone like myself (and probably my clients lol), that difference is not important. For people who are more accustomed to that lifestyle, their surroundings actually do make a difference to how comfortable they are going to be.
When an escort understands this difference and caters to that clientele, she is usually successful because there are fewer who do. Meaning she is not competing for clients from the larger pool, but from a smaller market and being one of only a very few for that market to select from, she is usually quite busy in spite of the 'fact' some guys will come up with that she isn't doing more (menu items) than someone who charges 200/hr. Well, that's not usually the point, but also, she is doing more. She is doing what that type of client wants, needs and expects. Which is usually more than simple menu items.