Cola is expensive

My sir loves soda water. When we were in Shanghai he used to drink a lot of soda water each day, especially during summer. Among them, his favorite is Fanta, the second Sprite, Cola comes last. So he drank Fanta a lot. In fact, I don't want him drink so much soda water, cause having too much sweet is bad for health. But he is too stubborn to persuade. Then I suggested that colorless drink was better than Fanta which contains not only sweet but also coloring materials. Then he turned to Sprite.

That time soda water was very cheap-a little more than six Yuan RMB per 2.5L bottle, equals to one dollar CAD. Soda drinks are very well sold in China these days. People tend to love sweet flavor, and people like acceptable prices too. In Toronto, the soda water is sold at about two dollars per 2L bottle in supermarket, much more expensive than that in China. Is it for health concerns that cola is sold much more expensive here?