For items shipped direct from our warehouse, our system database contains the weight figures for each product. The system simply adds the weight of each product you order and applies the shipping fee required by the postal service or United Parcel Service (UPS) to deliver it to you. Shipping charges for items sent from our drop-shipment partners or TripleClicks ECAs are calculated directly by them; We do NOT add any extra shipment charges to these or any other orders.