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It's Gonna Cost More To Send Mail Via USPS

This is the largest price hike in U.S. Postal Service history.

On Sunday, the cost of forever stamps increased by five cents to 55 cents.

Priority mail prices also jumped. A small box, which previously cost $7.20 to ship, will now cost you $7.90.

No mention of the price hike on USPS's official Twitter account: