If I ship a package that weighs very much, I have found UPS to be about the same rate, if not cheaper, and much more reliable than the post office. I print all my postage (both USPS and UPS) online and that saves money, too. With UPS, you need to give package to a driver or drop at a store. If you schedule a pickup, there is an additional charge. I think it is $10.
Hope everyone eventually got their packages!!!