We have been buying Mexican Cokes at our local Costco for the past year or so. The cases they sell work out to be $.83 per bottle.
My son went to Ireland last year with his high school marching band and fell in love with Club Orange. Apparently, it is one of the most popular sodas in Ireland. I searched around to see if I could purchase it in the states. I ended up buying it by the bottle from an Irish bar in downtown Seattle. It contains real orange bits and sugar.