Depends on the store . . . sometimes grocery stores don't move as much product meaning the beer will be a lot less fresh. Grocery stores also don't pay much attention to proper lighting around beer...
Beer should be stored upright in a cool, dark place, or the fridge. It shouldn't be on its side because that can cause oxidation and contamination from the cap, and in the case of unfiltered beers...
Of course there is! beer sold in gas stations generally has a much higher alcohol content as you will most likely drive far from the store and not be able to pick up any more beer. Therefore the beer...