I don't get it. How much cheaper is corn syrup compared to sugar? The cost difference shouldn't result in a price increase on a can of Coke by more than $0.001 (guesstimate) or something.
It's not all that much cheaper, though I know hfcs is easier to blend & transport since it is a liquid; possibly cheapening and speeding up the manufacturing process of the products it goes into. Plus, it has better shelf life.