what is the cheapest way to ship a box largely depends on the size, weight, and destination of the package. For domestic shipments, services like USPS, UPS, or FedEx often provide competitive rates for smaller boxes. When shipping internationally, options like DHL and freight forwarding companies may offer better rates for larger shipments or bulk orders. Using a fulfillment service like AMZFulfill can also help dropshippers save on shipping costs by consolidating orders and utilizing discounted rates from major couriers. To find the cheapest shipping options, consider factors like delivery time, package size, and destination.