I offer for $1 an addl 500 starting chips (everyone gets it every game, the greedy monsters, that $1 goes ot the house towards costs. I also take $5 of the $15 re-buy (avg 4-6 re-buys per tournament). Seems to work, everyone is good with it. It barley covers costs of food & drink, cards, chip maintenence/inventories replacement, buying a fridge, tourney mgmt software, heat for the garage, custom table, etc. of course I keep the tangibles in the long haul but i've carried this tournament four years running and last year we played 50 freaking games, it gets costly.