How much to charge for PPH?

We're doing a festival this weekend and I have a girl who is doing Henna in my booth part time. She's new to the business end of it and I've never done PPH. So, how much should we charge for pay per henna?

It really depends on your area. I would say charge sort of the same as you would PPF. I start at 5 dollars for very small very simple designs like a yingyang or a peace sign and go up from there.

I have just started some henna in rural NC Mountains...its sort of "popular" with the teen girls wanting a 'tatoo'. I have been so happy for a model that I ask a low price and I need the practice...
At a festival I charged $10 for back of hand or forearm design. For a private appointment, doing a henna back pattern in feathers I charged $50. At other bigger festivals in the nearest city, that support two henna artists basically any thing is $20 and up.
I have another charge question and will start a new thread.