Living Social offers $30 Vistaprint Credit for $15. Coupon code "TAXDAY5" cuts the price to $10. That's a savings of $20. The credit can be used on custom invitations, announcements, phone cases, tees, totes, calendars, banners, mugs, monogrammed stationery, and more. The credit must be used in a single purchase by June 6. Deal ends April 15.