The effect of Free (all included prices)

Free power in rented accomodation
http://www.nytimes.com/2010/08/16/nyregion/16chill.html?_r=1&hp=&pagewanted=all

Free parking
http://www.nytimes.com/2010/08/15/business/economy/15view.html?scp=1&sq=economic%20view&st=cse

All you can eat offers
http://www.youtube.com/watch?v=BDPk6OQkpeI
http://news.bbc.co.uk/1/hi/8320043.stm

What is the economics of these deals?

Water is not a FREE product!

AS Economics

http://www.bbc.co.uk/news/science-environment-11435522

The above article shows that were it not for UK water management we would experience "water stress".