I purchased a groupon coupon for a haircut, hair color, and manicure and pedicure. In order to cope with the demand they've broken up the appointments so that I am getting my hair cut on Friday, and I'm getting my mani/pedi next week. It says on the coupon to tip on the full price of the services ($145), which is fair.
So, I'm assuming I should tip once per session. How much should I tip each person?