Birthday Party RevenueDepending on the size and location of the facility â hosting as many as 30 birth-day parties per week is not unusual. A typical birthday party will cost between$10 to $18 per person with the average around $13.irthday Party RevenueDepending on the size and location of the facility â hosting as many as 30 birth-day parties per week is not unusual. A typical birthday party will cost between$10 to $18 per person with the average around $13.