How Important Is Google Analytics for Your Business?

Real world offline merchants have none of this data. If you go to any coffee store in America and you ask them how many cappuccinos did you sell today apart from Starbucks and Peats? I don't know, we made $300, you know? What happens when it's a rainy day? What happens on Tuesday at 5pm? We want to build a full point of sale system that is just gorgeous.