Postage is going up in a few days, but a few cents per wedding invitation is nothing compared to getting 100 of them returned because there wasn't enough cents on the envelopes. Before you buy those beautiful stamps from the post office or Zazzle, make sure you know what to buy. Assemble an entire wedding inviation and take it to your post office to weigh it; THEN buy your stamps. Square invites will take extra postage; thick ones will too. (And if you make your RSVP's a postcard, you can save there too...). You absolutely want to send this thing once!