My pro charges a flat fee (several thousand $$) and I pay all f his expenses. Those are split amoung each of the students going.
Please talk with your pro and discuss your goals. This is his profession and he will help you come up with a plan.

Pro/Am competitions are very expensive.For instance if you take your professinal away from their teaching for lets say even only three days. In their studio they would be teaching something like six hours a day at say $60 an hour. Add to that the other expences involved, travell , food, accomadation plus the cost of entering the comp in the first place. Add your own expences to that, it is becoming a rich persons sport.

I agree with Cyd.
I have students who have to pay for the time that I am there and not teaching.
I dont do a per dance entry it is a flat fee.
But yes it always has been and alsways will be (in the usa) a rich persons sport/hobby.
With that comes the snobby nose in the air attitude of so many students out there, because they have money and take coaching lessons with 'celebrity instructors' they think thay are better without really knowing much more.
But thats a different topic.