Hy guys, quick question. Im getting charged around $5 for pick and packing each unit. Im sending these units in a polybag, so Im thinking about sending the next shipment to Amz containing each unit in a cardboard box so that employers dont need to pack them again, and maybe decrease the pick and pack fees? If I pack my items to ship to amazon in boxes instead of bags, would my pick and pack fee increase (because of the larger dimensions) or decrease (since they dont need to pack it)?

Thank you and hope you have a day full of sales :)