Total Cost: read the stall menus, then add up each order. 8 orders per game.
Cashier Game: you get a wallet of $2 notes and $1, 50¢, 20¢ and 10¢ coins. Each round, pick money to pay for your food, say how much you handed over and how much change you should get. The change goes back into your wallet for the next round. 6 rounds per game.