What USPS service offers flat-rate pricing and boxes/envelopes that ship regardless of weight up to a limit?

• A. Priority Mail International
• B. Priority Mail Flat Rate
• C. First-Class Mail
• D. Bound Printed Matter

Answer: (B)

Flat-rate pricing means you pay one fixed price to ship, no matter how heavy the contents are, as long as the item fits in the USPS-provided flat-rate box or envelope and stays within the maximum weight limit. This is exactly what Priority Mail Flat Rate offers: you choose a small, medium, or large flat-rate box or envelope, pay the same price, and the shipment can weigh up to the limit. It’s ideal for sending heavier items without worrying about weight-based costs, as long as they fit in the chosen flat-rate packaging. Other services charge based on weight and destination (or have different restrictions), so they don’t provide that fixed, weight-insensitive pricing in the same way.