Ahh, my favorite subject, yours to I presume? Dimensional weight, when you get charged the 30lb rate for a 2lb package, welcome to Dimensional weight shipping. A 2lb package ships from Florida to California costs $7.00, a 30lb package $27.92. A big difference, huh? The package in question is a 2lb product, packaged in a box measuring 22"x22"x12", due to it's "large" size, it calculates to a dimensional weight of 30lbs. Now lets say if we packed this product into a slightly smaller box, say a 21"x20"x12" box, we would be charged the 2lb rate, not the 30lb rate, as this box size is the largest we can send without incurring the dimensional weight charge. So by shaving about 3" in box, we saved $20.92. So be sure to pay attention to box size when shipping!
Here is a great article better explaing the Who, What & Why of Dimensional Weight Chipping used by FedEx, UPS, and USPS.
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