Our products are sold by predefined weights and prices accordingly. Variants were created for each product which show weight options (15g, 25g, 50g, etc.). Our products are sold by weight and not size. We setup basic shipping zones which normally cover any orders. We ship most products as a Flat Rate option from USPS. Recently we've experienced a large increase in orders that weigh more than the Flat Rate envelope can handle.
My question is, if I add each products weight to each variant, what will I need to do to the shipping zones so that the shipping prices adjust properly on checkout. Example: If the customers products weigh more than 300g, I'd like the shipping option to display the higher price for the USPS box instead of the cheaper Flat Rate price.
Thank you so much.
Hugs,
Natalie