Found on Pepsi 1.5 liters on a special display in the frozen foods section.

Save $1 wyb hamburger meat and any 2 Pepsi 2-liters or any 2 Pepsi 1.5 liters or any 1 Pepsi 12oz. bottle 8pk.

Expires12/31/11 - No mention of doubling & begins with a 5. One per purchase