Where do the USPS & UPS shipping rates for FBM Shipping Cost to Buyer calculation come from ?
The Shipping rates for FBM Shipping Cost to Buyer calculation are calculated from the published rates of USPS and UPS.
For USA Customers
January 2021 Price Change: https://pe.usps.com/pricechange/index
2020
United States Postal Service Shipping Rate Sheet (2020)
UPS Shipping Rate Sheet (2021)
For Candian Customers
UPS Shipping Rate Sheet (2021)
updated: 1/5/2021