Buy Option Cost Components - with this alternative you will contract a commercial bakery to make the brownies for you. There are two cost components. a) Purchase - the bakery will charge you $0.25 per brownie for the first 10,000 brownies you purchase $0.21 per brownie for each brownie over 10,000 purchased For example, if you purchased 13,000 brownies you would pay (.25 * 10,000) + (.21 * 3,000)