Im also having the same issue. i already purchased the commerce basic plan here (for a full year) and cant seem to work out how to set up my shipping that wont rip the customer off nor put me in the red. i've already created all my products with Printful and are ready to go. but i cant seem to just have a shipping rate that can calculate the amount per product category and to which country its meant to be shipped to. does shopify have this this capability? any help or advice would be highly appreciated