C.S.
So assuming I need house rules...I am your client, and you will guide me and my family toward completing written goals? Business plan/family plan? Are you going to publish this for them? Do they write it themselves and you guide? Please explain as if you were selling it to me.
Okay, before getting started, I think you should write a plan. Your post was written as if on a whim. You have to be prepared to answer common questions, before they are asked, right up front.
So to answer your question, all that comes to mind is my daughters 30 minute tennis lesson at $45 for 6 weeks. 3 hours/$15 an hour. So will the session be exclusive to 1 person or can the whole family and the neighbor sit in on conference call. Will you host this as a teleconference with limited seating? This would make a difference in the pricing, as a private session is always a bit more expensive.