I was at the local Office Depot. As you can see in the picture, the ad over the cases of water said, Buy More, Save More. And the prices?
1 for $5.98, 2 for $11.96. My math would have that price at exactly double.
Fortunately, my marketing coworker, Michael, pointed out that perhaps they were referring to the fact that it was such a great deal for 1, that you would be saving that much more money on 2.