That depends on many factors. A stamp is worth its face value for use as postage. If you have something that is old and is rare, it could be worth some money. Today's First Class postage stamps are 44 cents.
Currently you can purchase it for 44 cents. The Forever stamp is worth the cost to mail one ounce of first class mail. It will always be worth that much regardless of how much it costs at the post office.
In the US the first class stamp for half an ounce was 3 cents. Those stamps are no longer valid for postage, but are worth far more than face value!
In 2018, a U.S. Forever Stamp was worth 50 cents. The Forever Stamp allows customers to mail a one-ounce letter regardless of future price increases for First-Class postage. This stamp was introduced in 2007 to provide a convenient option for consumers.
A first class stamp costs 46 cents in the US. Each additional ounce is 20 cents.
Up to, but not exceeding, one ounce.
As of October 2023, a US Global Forever Stamp is worth $1.50. This stamp allows for mailing a one-ounce letter to any destination outside the United States, regardless of future price increases. It simplifies international mailing by ensuring that the postage is always valid for the specified service.
45 cents for the first ounce and 20 cents for each additional ounce (up to a point).
.75
$0.20
US Mail first class postage was .02 per ounce
45 cents for the first ounce of mail.
It depends on the weight of the package or envelope. Letters weighing one ounce or less require a 49 cent stamp called a "forever" stamp.