It's good to support businesses on campus.
A couple of students at James' school rent space in the student union to open a sandwich shop.
James wants to buy a sandwich for lunch.
James stops at the sandwich shop and buys a roast beef sandwich and chips for $10.
James walks to the Subway across the street from his college campus.
James discovers that the shop makes much tastier sandwiches than any of the chains near the campus.
James saves a few dollars, but the other students' store eventually goes out of business due to a lack of customers.