That's way more than enough and I would not go that high on a first experience unless it was extraordinary. As far as a masseur soliciting tips mid- message, it is a complete turn-off for me and will let them know it. I won't hesitate and if we don't have a mutual understanding of how I feel, I don't return. It does not ever happen with my regulars and they know if they treat me right, they will be rewarded.