Free Strawberries any taker?

This is now midsummer in Sweden and some strawberries farm invite visitors to come to visit their farms to pick and choose from their farm on the spot. They can just pick and choose and freely sample their harvest . Even when they return with their harvest they are only charged for those they present themselves to the cash counter for payment at 55 kroners per kilo which is just the same as supermarket or other markets.  There is no limit on what you can put into your mouths. Some young people can consume nearly two thirds of their picks and pay for one third. The average is normally about 50% down in the stomach so what you have to pay is already 50% cheaper plus the happiness of being on the spot witnessing the berries farm and the scenery there. It is really good fun!