That will depend on the size of the order and discount obtained. Usually the weight of a combined order will not be the only determining factor. I will of course be ordering from JandC myself so part of the first shipment charges will be absorbed by me. The second shipment should be roughly equal to a shipment directly from JandC since I am within several hundred miles of their location.
For instance for 20 boxes or rolls of film...a twenty percent discount would apply. I would assume that John will work the discount in some similar fashion on dollar volume of the order.