Consider Popular USPS Shipping Service Levels
USPS Priority Mail is one of the most popular and cost-effective shipping options available for packages weighing over one pound.
USPS Priority Mail offers several popular options:
Priority Mail: Weight- and Zone-based. As the names imply, the shipping fees you pay are based upon the weight of the package and the distance it has to travel, which is also known as the “Zone.”
Priority Mail Flat Rate. “If it fits, it ships.” And that basically sums up the Flat Rate program. If your item fits within a specified Flat Rate box or envelope, it’ll ship for the pre-assigned rate of that package.
The Flat Rate service applies to domestic shipments up to 70 pounds, and you’ll need to use Flat Rate branded boxes and envelopes, which are available free from USPS.
Priority Mail Cubic. Priority Mail Cubic is one of the best options available for businesses who qualify, since the USPS bases shipping prices on the size of the package and distance traveled, instead of the package’s weight.