The other day I wanted to buy something in my local supermarket. But when I got to the register, for some reason the price didn't come up. So, the cashier got up and went on the hunt for the price. Came back and asked me. We went together to where I found the product and looked and looked and looked. No price anywhere. As a matter of fact, there was no such product!
Now, whenever there is no price available from the barcode, I ask the cashier if the product is free. It never is. They always find a price. This time however? No price and in the end I left with the product and with my money. That's a good day's shopping in my eyes!