Hi! I have a Norwegian shipping module which calculates the shipping cost from the products weight. My problem is that the volume weight of some of my products are way higher than the actual weight. But if i sell two of theese products together the volume weight stays the same. Because of this i cant put the volume weight directly on the product.

An example:

one product:
volume weight: 1,5kg, actual weight: 0,5kg
two products:
volume weight: 1,5kg, actual weight: 1kg

What is the best way to solve this?
I do sell other products aswell so i cant use fixed prices.