Please help - what is better to put ticket price? That there was the maximum profit and the maximum attendance of house matches?

At the 3rd manager level maximum cost of tickets - 16$. What is better to put the price? A half from the maximum (8$)? It is less than 8$ (5? 6? 7?) or more than 8$ (9? 10? 11?)? What the better ticket price for house matches of league, a Champions League and cup matches?
Thanks in advance