My daughter takes standing weekly private, but since she injured her hamstring, she has taken a break from tumbling this summer. What I do know, at my daughter's gym the cost of private instruction is for 1 half-hour= $35.00 individual, with 2 the cost is $25.00, to be honest, I do not know anybody that take privates with more than 2 people, so I am not sure if the cost changes for 3... for 1 hour private, I think the cost is $70.00 and 2 people, it is $60.00...
My daughter takes privates to advance her tumbling skills and since her instructor works with her team during tumbling, he also work on things that she needs to clean up on in the routine - like techniques and he is working a lot of jumps to back, but since my daughter is a regular for this instructor, he may focus the privates on many different things that is important in the routine... What I often noticed, my daughter(backspot) is often asked after her privates to stay and work with flyers taken private instruction for flying, either working as a base or backspot for the instructor, she has never been paid for this service, I think, most of the cheerleader working in this capacity are it looks good or for browning points ...