$250 is a good number for FS in a spa, going over that is overpaying and if you are looking to repeat then eventually you're just pissing future visits away. The ladies will try to hustle the extra $$$ out of you if you let them. If they don't tell you that they want more ahead of time, you should only fork out the +$50bj/$100fs. That is the standard rate at the Premier chain. Having said that I know of a guy that has a good rotation of girls that he doesn't tip, but apparently he has a big dick and is good looking.So if you get extras then average would be $100 more for a total of $250.