The group made a profit of 20 baht by selling 65 sandwiches for 1300 baht with costs of 1280 baht. While satisfied with the profit, they were tired from the work. They realized they could have increased profits by raising prices slightly given the large portions or lowering portions at the same price to sell more sandwiches. The experience taught them that selling is harder than math and how to advertise and understand customer wants like large portions at low prices.