The Cost of a Stamp Rises to 45 Cents

Photo: Justin Sullivan/2011 Getty Images

That's a one-cent increase, which incredibly will generate an additional $888 million in annual revenue for the U.S. Postal Service. The cost of an e-mail remains free, as long as you don't account for the emotional fatigue of having to repeatedly unsubscribe from relentless marketers that follow you forever after you make an ill-advised impulse buy.