Exclusively for Prime members, Amazon offers the Vita Coco Coconut Water 11.1-oz. Bottle 12-Pack in Pure for $9.99. Check out via Subscribe & Save to drop it to $9.49. With free shipping, that's tied with our May mention as the lowest total price we've seen. (It's about $2 under what you'd pay at a local wholesale club.)
Be sure to cancel your subscription after receiving your item to avoid being billed for subsequent shipments.