priority mail rates usps

priority mail rates usps vary depending on the size, weight, and destination of the package. For example, a small flat-rate box typically costs around $8.70, while a large flat-rate box can cost about $21.50. The rates for Priority Mail are based on the weight of the item and the distance it is being sent. USPS Priority Mail provides 1-3 day delivery depending on the destination and includes tracking and insurance for packages up to $50. For heavier packages, the cost increases based on weight and dimensions.