According to a study by the University of Winnipeg, if you want to save money, you should make sure you carry brand-new bills.
That’s because people tend to spend old, wrinkled bills FASTER than they spend crisp, clean ones. Old, worn-out bills look DIRTY . . . and that makes us want to get rid of them. People who have a wallet full of old bills spend MORE money than people with fresh new bills.
People put a premium on crisp, new bills, and don’t want to waste them. So they hold onto them longer.