I learned that when you send out a squishy, make sure to go to the "real" post office or a "postal annex." I stopped at one of those shipping stores today that cover all shipping carriers because it was on the way and DH had gone there before. His words: "It will be quicker!" YES, because they have a different rate system and only DUMMIES LIKE ME go there. They charge DOUBLE what the USPS does. No kidding!
So if you find yourself in one of those places, ask how their rates are BEFORE handing overthose squishies. For what it cost, I could have driven to the next county.