This page shows an example of the game model. The price that you set determines the order quantity. If you have a lower price (relative to the other teams), you get a bigger order and vice versa. The actual formula is complicated and will not be explained here.
The actual sale is the lower of the order and the capacity. Revenue = actual sale X price. Cost = actual sale X u/cost. Expense = capacity * u/exp. Profit = Revenue - Cost - Expense. (Note that the expense depends on capacity and not actual sale).