For a standard 1-ounce letter being mailed in the U.S., the price of a postage stamp is now 73 cents. Square, oversized and oddly-shaped envelopes start at $1.19. Standard, rectangular postcards ...

In addition to white envelopes and manila envelopes, recycled paper envelopes can be used for letters, bills, and greeting cards ... States for as little as $195 plus additional fees per standard ...