usps estimated delivery cost is the price that a customer would pay to send a package via USPS, based on various factors such as size, weight, destination, and the selected shipping service. USPS offers several services, including First-Class Mail, Priority Mail, and Express Mail, each with different pricing structures. For a more accurate estimate of delivery costs, customers can use USPS’s online tools, such as the Price Calculator, or visit a local post office for assistance with pricing information based on specific shipment details.