Because Forever stamps hold their value forever (as their name suggests), you can buy as many as you want at the current price, before they each get 5 cents more expensive. Any you already have at ...

The idea behind the Forever stamp is that it retains its value and can be used forever at the current first-class postage rate, even if that rate increases. This means if you buy a Forever stamp ...

so you can stock up and still use them even if the cost of Forever stamps increase. But you can get postage stamps for ...

The new stamps are Forever stamps, which are always equal in value to the current First-Class Mail 1-ounce rate. The stamps are available now at Post Office locations nationwide and online.