I want to know if the following is possible.
I have 4 categories of items. Group A,B,C & D. The customer is able to purchase any of items in each category. However, I want the shipping to be calculated diffrently for each category. Each category has a flat rate shipping of $40. If they buy over $270 in a single category, they get free shipping for that category.
I know it sounds strange but each category comes from a different warehouse.
The "Quantity Discount" Mod looks very close to what I want to do, but instead of the discount, I want to give free shipping.
Please help.



