which is cheaper ups or usps for 10 lb package depends on the destination and shipping method. For smaller, non-urgent shipments, USPS often offers more competitive rates, especially for domestic deliveries. However, for a 10 lb package, UPS might offer more reasonable rates for longer distances or expedited services. USPS provides flat rate options that could be advantageous for certain weight categories, but for large, heavy packages, UPS may provide better value with ground services. It’s important to compare prices using the respective shipping calculators to find the best deal.