Postage for Invitations
You'll need to consider postage requirements when budgeting and when taking care of printed details. Take a completed invitation to the post office and get the exact amount of required postage from a postal clerk. You don't want to send out invitations to have them all returned for lack of correct postage.
Ask the postal clerk to show you the postage options in the right denomination. You might be able to find really pretty stamps or stamps to match your theme. I've also included my favorite postage tip in Planning the Perfect Quinceanera and you can find links to postage related sites on my resource pages.