Everything you ever wanted to know about shipping via USPS Priority Mail. Priority mail is a great tool if used correctly. Update: it is now 2017 and the prices have gone up. I have also received an email from USPS that says that packages will be vetted for weight and appropriate postage. Up until recently if you accidentally put medium postage on a large box thee was no mechanism in place to check that or bill you, no they say they can do that.
