Get a Coke Zero Printable Coupons right now when you like the Coke Zero Facebook page. Just click on the Trial Tab on the left side. This coupon is good for 99 cents of any Coke Zero product. I often see one liter bottles on sale for $0.88-$1, so you are looking at possibly free with these Coke Zero Printable Coupons.
This one may be gone soon so print while you can.