Don't forget the postage stamp price increase goes into effect on May 11th. It will increase from 42 cents a stamp to 44 cents a stamp. This is important to note because if you sent out response cards with the old postage after May 11th, they will be returned. The best solution to the increase is to purchase the FOREVER STAMP from USPS. You "lock" in your price on the FOREVER stamps you purchase. No need to worry about returned response cards!
There are also pricing changes on other services - be sure to visit the USPS website for more info on the increases.