Zevia Zero Calorie Soda, Ginger Root Beer, Naturally Sweetened Soda, No Sugar, 12 Fl Oz, Pack of 24 for $13.36 or less.

Amazon has Zevia 24 pack Ginger Root Beer on sale for $13.36 ($11.36 if you have 4 more items added to subscribe and save).
Shipping is free with Prime or on orders $25+ or when you checkout via Subscribe & Save.
Note, if you checkout via Subscribe & Save, you may cancel your subscription any time after your order ships.