Don't let her tell you that Groupon said you must pay 10% gratuity. It says nothing like that anywhere. This woman is counting you on being trusting and naive. I told her I had the Groupon receipt and original ad in my hands and that it says nothing of the sort. She immediately cancelled my appointment and called me a stalker! LOL This after waiting 3 months for my appointment. This place appears to be a bit "ethics challenged"! Wish I'd read these negative reviews before I purchased. Buyer beware.