its not rediculous - in their view. If you are earning very good money or have decent financial resources, then to them, its not a great deal of money and why shouldn't they pay that and see who they want.
its much more rediculous that some guys (i don't mean anyone on this tread because i don't know your circumstances) pay £60 when actually the family finances can't really afford that. Its all about what is right for you.
she is not my personal cup of tea so never seen her (and i personally have never paid anything like that) but she has been active in the bournemouth area for a number of years and has always had very good reviews and comments. Its a simple question for each of us - is she worth that amount to US. if so book, if not pass and move on. No need to diss anyone who thinks she is worth it and sees her.