Sometimes, the ripoffs that are the most frustrating are the smallest ones: small transactions that are repeated thousands of times and eventually add up to some real money. Brian has one such issue with his local Dunkin’ Donuts outlets: they keep charging him too much for a bagel with butter. Seems petty, doesn’t it? They charge him for a bagel with spread, then charge separately for the butter, at a difference of $1 for every bagel. If he buys a bagel five days a week, fifty weeks a year, that’s $250 over the course of a year. He could be halfway to buying an iPad, just on butter overcharges.