Opportunity cost

“If you understand opportunity costs and you have a ticket to a game that you could sell for $1,000, it does not matter how much you paid for the ticket. The cost of going to the game is what you could do with that $1,000. You should only go to the game if that is the best possible way you could use that money. Is it better than one hundred movies at $10 each? Better than an upgrade to your shabby wardrobe? Better than saving the money for a rainy day or a sunny weekend? This analysis is not limited to decisions that involve money. If you spend an afternoon reading a novel, then the opportunity cost is whatever else you might have done with that time.”

“How can I possibly know which of the nearly infinite ways to use $1,000 will make me happiest? The problem is too complex for anyone to solve, and it is unrealistic to think that the typical consumer engages in this type of thinking.”

Excerpt From: Richard H. Thaler. “Misbehaving: The Making of Behavioral Economics.”