I am building a store which offers some very small products (cheap to ship) and some very large products (heavy to ship).
I'd like to make sure the customer is charged the right amount for shipping based on the items they're buying (there is no free shipping option on my store).
I have the "Default Shipping Profile" that is created with Medusa.
I have used Postman to create a new "Large Items" shipping profile (which I see in my Medusa admin so it appears to have worked).
However I'm now stuck. How can I set the rules so the products that should be charged the "Large items" cost at checkout are actually charged it?
Any help & pointers much appreciated.