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Postage Rates & Prices | USPS
First-Class Mail & Postage | USPS
Current Postage Rates, US Postage Stamp Prices - Stamps.com
Types of First-Class Mail® - USPS
Mail & Shipping Services | USPS
Retail Postage Price Calculator - USPS
Stamps | First-Class Mail | Postage | USPS.com
First-Class Mail International | USPS
How to Send a Letter or Postcard: Domestic - USPS.com
Retail Postage Price Calculator Weight and Shape/Size - USPS