Amazon offers the Talking Rain Natural Sparkling Water 12-oz. 24-Pack for $7. Add it to your cart via Subscribe & Save to cut it to $6.65. With free shipping, that's $0.28 per can, tied with our mention from ten days ago, and a very low price for sparkling water. It features no calories, sweeteners, sodium or preservatives.
Note: Be sure to cancel Subscribe & Save after your order arrives, or you'll be billed for subsequent shipments.