We only buy certain brands, because we don't drink sodas made with HFCS, only those made with real sugar.
We don't have to have root beer at all, but we both love it, and it's a harmless indulgence.
Depending on where we shop, a 6-pack of Abita in bottles (which we like not only because it's made with Louisiana-grown sugar, but also it's a local brewery, the get their water from a loacl aquifer, the bottles are made from recycled glass, the carton is made from recycled paper, and on the beer side of the brewery, spent grain is fed to local cattle) costs $5.99. An 8-pack of Jones in cans costs $4.99. A 6-pack of Winn-Dixie Natural in cans costs $3. The Abita tastes the best and is the greenest, but also costs the most. The Winn-Dixie brand is the cheapest and tastes pretty good, but they're often out of it. So most of the time, we go with Jones.