Julie Markes could be a spokeswoman for the Soda Stream Soda Maker - The Best Gadget I ever purchased! Refills are available at the Food Coop. We used to go through a case of seltzer every week or so. and now we make our own at home. It is less expensive, better for the environment, and the seltzer can be made as bubbly or as "Perrier-like" as you wish.