Is it cheaper to use a Flat Rate box or your own box USPS? Stores & Services 17 April 2022 While Medium and Large Flat Rate boxes may be free, using your own packaging is often CHEAPER than shipping Priority…
Is it cheaper to use your own box for priority mail? Stores & Services 3 April 2022 Otherwise, Priority Mail® is just the name of the service class, and you can use any box or packaging that…
