If you don’t have a cache of “Forever” stamps at home, you’re going to fork out more money to buy new ones. The price of a First-Class Forever stamp went up by 2 cents to 60 cents each on Sunday, the U.S. Postal Service said. The Postal Service touted that the increase, at about 6.5%, is less than the inflation rate. “The (increase) is lower than the Bureau Labor Statistics annual inflation rate of 7.9% as of the end of February,” it said in a press release. The 60-cent cost covers a one-ounce letter. Each additional ounce costs 24 cents, up from 20 cents. Forever stamps were launched in 2007 …