. Suppose that Brock University's tuition is $7,000. The cost of textbooks is $1,000, and the cost of food & housing is $19,000. If you did not go to Brock University, you would have worked as a server, making $50,000 per year. What is your opportunity cost of attending Brock University?. Suppose that Brock University's tuition is $7,000. The cost of textbooks is $1,000, and the cost of food & housing is $19,000. If you did not go to Brock University, you would have worked as a server, making $50,000 per year. What is your opportunity cost of attending Brock University?