This seems kind of expensive as time goes on. I don't want to penny pinch over my child's Health but at $5.50 for an eight pack it adds up. (3.1 oz. each) Is there some really special culture you can't find elsewhere if just the packaging and taste that make it fly. We have some smoothies that give you double the volume for the price how would you compare them nutritionally. On a related note I wish I could find some kind of rating of food based on the price per unit of vitamin and or mineral content.