UPS, USPS, and Fed-Ex shipping is all determined by weight. The weight of your complete order (including box) is calculated with your zip code to determine your shipping cost. Strapworks do not add any fees to that shipping cost, you pay exactly what it costs. Phone orders have the ability to request Flat Rate Shipping via USPS (dependent on box size limitations). You may also use your UPS or Fed-Ex Account Numbers at any time during checkout.