I can't seem to find how Magento allows you to add the tare weight (box and shipping supplies weight) so currently I have the total weight figured into each item. Unfortunately this presents a problem when a customer buys several items. The weight of the box and flyers/invoice slips get added or multiplied into the order for every item and that is jacking the price up and I know I am loosing customers. When It should only be one box for all the items. How can I set up Magento so that all items are calculated into only 1 box? Where is the tare weight added?