We've had those bottles for years now here in Sweden.
The reason for the change to the taller thinner can is because the amount of aluminium used in the top and bottom is less. The top and bottom in an aluminum can is the thickest parts.
The price increase has nothing to do with it though..
Search on YouTube to see how aluminium cans are made and you'll understand why the "lid" and bottom is where the aluminium is thicker (as compared to the "walls").