It's not unusual to be paid big dollars to produce a show for a charity. I did one last year where basically I controlled the production of the floor show and DJ'd the afterparty. The fee was $12,000. Did I make $12,000? Not even close. My job was to make sure everything was in place in the A/V part of the show. I hired another company that specializes in that stuff and just made sure everything was running according to schedule. You are paid on those events mainly for the time you put in before the event not the night of. By the night of you should be able to sit back and watch