15 Hidden Costs That Can Blow Your Wedding Budget Photo credit: CC license by Jeff Stvan 3. Postage Postage prices can take a big bite out of your wedding budget. Plan postage for bridal shower invitations, wedding invitations, RSVP cards and thank-you notes for both bridal shower gifts and wedding gifts. Save money on postage by using social media for save-the-date postcards. Prev3 of 16Next Facebook Comments comments