Amazon offers the Glaceau Smartwater Vapor Distilled 1-Liter Water 6-Pack for $5.98 with free shipping via the following steps. That's tied with our May mention and the lowest price we could find by $4. To get this deal:
  1. View the Glaceau Smartwater Vapor Distilled Water 6-Pack for $7.98
  2. clip the 20% coupon on the product page
  3. check out via Subscribe & Save for a final price of $5.98 with free shipping
Note: Be sure to cancel Subscribe & Save after your item ships to avoid being billed for future shipments.