Are you taking advantage of the exchange program? When you take your empty cylinder to a local participating retailer, you can trade in for a full cylinder at the customer service desk for approximately $14.99 (plus tax). This 60L cylinder can make up to 60, one liter bottles of sparkling water. Broken down by serving this comes out to .24 cents per 1 liter serving. As most cans are 12 oz, this breaks down even further to approximately .8 cents a serving! These prices represent plain carbonated water, but you will find our flavors break down to a similarly great deal!