I am not sure if this is the right place for this topic? I was wondering for the people that use drop ship vendors for you products do you use actual shipping quotes from UPS, USPS and etc or do you make your own custom shipping based on the $ value of the order?

Reason being we calculate using UPS but if they are coming from multiple vendors on one order we are then getting charged multiple times for shipping while the customer only pays for one fee based on the order weight.

Just curious on any solutions or ideas.