is it cheaper to ship a box ups or usps refers to the cost comparison between shipping a box using UPS and USPS. While both carriers offer a range of shipping options, the choice between UPS and USPS depends on factors such as the size, weight, and destination of the package. USPS tends to be more cost-effective for smaller packages and local shipments, while UPS may offer better rates for heavier items or business shipments. For e-commerce businesses, understanding the shipping rates of both carriers and selecting the best option based on customer needs can help optimize shipping costs.