I get free soda at work, which usually works out to the equivalent of 2 cans per shift. 12 packs of coca cola and coca cola products are usually 3.99, but are often buy 2, get 1 free, so that gets me down to ~2.66 for a 12 pack or 22 cents a can. And I probably drink about 4 or 5 cans a week at home.
But then I have a weakness for a brand called Jarritos, which is a Mexican soda, which comes in a glass bottle. These go for around 1.50/bottle at the grocery store.
And I also get a craving for cream soda, root beer, or black cherry in a bottle, which is also in the 1.50/bottle range.