Aww, you're no fun. The point of the metaphor is how different and crazy the school environment is, after all. So let's just add your argument in! - The cust

Aww, you're no fun. The point of the metaphor is how different and crazy the school environment is, after all. So let's just add your argument in! - The customers are given personal gift cards to purchase products, yet few are motivated in doing so, so they just let them expire. These cards are not valid at any other store, though, and similarly cannot be used for any other merchandise than the store offers, even if the store's products aren't very good. Good point!