"Playing clubs usually involves door sales. Depending on the deal you negotiate, it is very likely that your income will be partially or wholly dependent upon a percentage of the tickets sold. In every instance where an official box office is not used, plan to have someone from your group stand with the club's money collector and keep count with your own clicker. Unless you have someone counting paid people, you can't be certain that the numbers given to the manager or owner are the same numbers you receive when you settle the gig later that night."