How much does shipping cost per pound?
Parcel pricing isn't linear, so per-pound math misleads. Our Newark to Atlanta quotes started at $9.91 for 1 lb, dipped to $8.48 at 2 lb, and reached $45.01 at 50 lb. The first pound is the expensive one; each added pound costs less than the one before.
Why did the 2 lb box quote cheaper than the 1 lb box?
Rate tables have odd seams. On 2026-07-27 USPS Ground Advantage wanted $9.91 for our 1 lb parcel but $8.48 for the 2 lb one on the identical lane, likely because the two boxes fell into different size tiers. Quoting both configurations occasionally pays.
What weight range is cheapest to ship?
In this data the sweet spot ran from 2 to 5 lb, where every winning quote stayed under fourteen dollars on the East Coast lane. Costs climb steadily after 10 lb, and cross-country amplifies each step, with the 50 lb Los Angeles box winning at $76.04.
Which service was cheapest most often?
USPS Ground Advantage took the rungs up to 3 lb, UPS Ground Saver owned the middle from 5 to 20 lb, and plain UPS Ground won everything heavier. That handoff pattern held on both routes we quoted.