The average charge on a transaction fee can run from 2.85% to 4.35% you sell 1,000 tickets for $10 thats $10,000 in sales now takeout the 3 or 4% in service charges alone and thats $300 or $400 in lost revenue. Much more than a parent volunteer or even 2 or 3 paid people working 6 hours between them at $10 a hour to sell tickets. Plus all the cash ticket sales you can get at the school pre sale the week of the game by having students purchase them in the schools office where the secretaries are selling them and collecting the cash and already getting paid as part of their days work. Heck as a Student Council Member ( back in the day) we used to go around to the homerooms the week of the games and sell tickets to the games on Friday night.