Hi,
yes the products have shipping classes. My problem:
I get shipping prices from an shipping company through their API. So they will always be changing.
In the cart, the customer maybe have an item from Vendor A and an item from Vendor B. Then it will be two different shipping costs in the same order, one rate for shipping class A and one rate for shipping class B.
How will I be able to add my calculated rates to the cart, one rate for shipping class A and one rate for shipping class B?