what is the cheapest way to send something often depends on the size, weight, and destination of the package. For smaller, lighter items, USPS First Class Mail is typically the most affordable shipping option. For larger items, ground shipping with carriers like USPS Ground, UPS Ground, or FedEx Ground is generally cheaper than express services. International shipping costs vary based on destination and the chosen carrier. Comparing rates using shipping calculators is a great way to find the most cost-effective shipping method.