I've done some extensive research (!). Usually it's the old adage that you get what you pay for. I've had good ones in Chinese massage shops for £40 and really good ones for £100 from other providers. I suggest you do your own research as they can vary from visit to visit - and some times with the same girl. I'd find a massage shop (preferably out of the west end as they can be variable in quality but are consistent in top end of expenditure. Find a shop near you, if you establish a relationship with a girl by going a couple of times, you'll probably find she delivers more on each visit. My experience anyway.