ShipRush offers USPS Priority Mail Cubic® pricing with no markup or fees

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Priority Mail Cubic is a service you won’t find at the Post Office, but we offer it at ShipRush and it’s the best way to ship small, heavier packages.

What is USPS Cubic Pricing at ShipRush? 

Priority Mail Cubic is a sub-service of Priority Mail that shippers of small but relatively heavy packages use to optimize their shipping.  

The pricing for Priority Mail Cubic is based on the outer dimensions of your package, rather than the weight. You can ship up to 20 pounds for no extra cost, making it one of the cheapest shipping services available for small boxes.  No extra work for you, ShipRush will automatically ship Cubic if your package qualifies for Cubic rates to make sure you are saving as much as possible! 

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USPS Cubic Rates Offers: 

Cheapest pricing for small packages

Priority Mail Cubic at ShipRush is the cheapest, fastest way to ship small packages that weigh between 1 and 20 pounds. 

Delivery in 1 to 3 business days

USPS will deliver Priority Mail Cubic packages to anywhere in the USA within 1 to 3 days. 

Free package tracking included

All Priority Mail Cubic packages included full door-to-door tracking, so you can keep an eye on your shipments. 

ShipRush saves you up to 89%

Priority Mail Cubic pricing isn’t available at the Post Office, and it’ll save you up to 89% off retail prices.