CO2 cartridges are used to pressurize the bottle. To keep everything cool you can use a standard water cooler with a few simple modifications. The 3 liter bottle is too tall for some coolers so ...

The Kirkland Signature California Pinot Grigio 3L box retails for $12.99 exclusively at Costco. With 3 liters equaling 4 bottles, that puts your per bottle price equivalent at an astounding $3.25.