In reading about Koppur's 4 cents entry, I remembered an how I made money from returning a xmas gift I had bought.

I needed a calendar as a gift and purchased one for $14.00 at B&N. A week later, there were some extra calendars around the office, so I decided to take one of those and return the calendar that I had purchased. I returned it at a different store but got back $14.08. I told the cashier that the original receipt states $14.00, but her registered calculated that I was to be refunded $14.08. I just took it and pondered on the drive home. A few days later I realized that why I go more on the return. I had made the purchase in OC County which has a lower sales tax than LA County which was where I returned it. All I know know that B&N now has a loss on return due to sales tax for $0.08 while I pocketed the change.