Super Seltzer Grapefruit Seltzer (12 OZ) is $1.99 at CBC Liquors, Westford in Massachusetts — in stock now, with pickup and local delivery. Esplanda's Grapefruit Seltzer is a refreshing, non-alcoholic beverage that combines the bright, tangy taste of grapefruit with the effervescence of sparkling water. Perfectly balanced in flavor, this seltzer offers a crisp, invigorating experience ideal for any occasion.