(I’m ringing up a customer for his game trade-in. It’s a rather old game.)

Me: “Alright. You’ll be getting $5 store credit, or $3 cash.”

Customer: “What! I paid $50 for that game 4 years ago!”

Me: “Yes, but it’s a little scratched. A few sequels have also come out since then.”

Customer: “I want at least $30 for it.”

Me: “If you were a customer, would you pay $30 for this old game?”

Customer: “No.”

Me: “Then why would you expect anyone else to?”

(The customer stares at me dumbfounded. He then asks for his $3.)