Why do UPS shipping charges differ from what shopping cart calculated?
The cost to ship UPS Ground (residential or commercial) is calculated using ACTUAL weight. Since most of our shipments are shipped Ground, we enter ACTUAL weight into our shopping cart for freight calculation. This works well. The problem occurs with Overnight, 2nd Day or 3rd Day. The shipping cost for these packages is calculated using DIMENSIONAL weight. Dimensional weight has nothing to do with the weight of the item and only uses the average weight for that size of box within all of UPS. It is impossible to enter the dimensional weight into our shopping cart. Therefore, most Express calculations are not correct. The weights can be dramatically different – like 7 lbs for ACTUAL vs. 37 lbs for DIMENSIONAL. This is very frustrating and time consuming. We have to call each customer and ask them if they want to pay the additional amount. Bottom Line. If you need us to ship Express, you need to be prepared to pay more. Please give us your cell phone number if you will be out and about so