Can I use 2 Forever stamps for ... Online Legal Flat Rate Envelope $8.45 Commercial Base $9.00 at Post Office & Online Small Flat Rate Box $8.65 Commercial Base $9.20 at Post Office & Online You may ...

you need a Domestic Forever Stamp and a Foreign Forever Stamp. One dollar is equal to this. The first ounce is free, but only for the first time. For every additional ounce above that weight you must ...