Sorry for the nitpick, but I think you mean, "buyers pay $65" or "price after markup is $65"; markup is the difference between input price and sale price.
No worries about the nitpick! However, in the market of "In home" tutoring my wife was working for a company that was indeed charging around 85 to 90. Markup was 60-65, tutor was paid 20-25. (prices depended on quality of tutor).
