Charging different prices is often fairer than charging everyone the same price. While there are no standard answers to the question of what makes a price fair, business leaders can embrace market transparency, understand what drives the perceptions of fairness in their market, and ensure that they offer prices that customers will perceive as fair. With the right understanding and the right approach, companies can vary prices in ways that mutually benefit themselves and customers, and perhaps society as well, as the author explains.