Carbonated beverages top the charts when it comes to grocery items that sell like (actually, better than) hot cakes. In 2009, Americans spent $12 billion on carbonated beverages at grocery stores alone, making it the best-selling grocery store item, according to Information Resources, a marketing research firm.
Couple this information with the fact that Americans are consuming more sugar-sweetened beverages than ever before -- and contracting weight-related health problems at an alarming rate -- and you may want to opt for an alternative. You could save money by buying low-calorie pre-sweetened drink mixes and pepping them up with a touch of sparkling soda. Or, you could really save a buck and fill your glass with tap water.