http://en.wikipedia.org/wiki/Price_elasticity_of_demand
http://en.wikipedia.org/wiki/Price_elasticity_of_demand
http://en.wikipedia.org/wiki/Price_elasticity_of_demand
http://en.wikipedia.org/wiki/Price_elasticity_of_demand
http://en.wikipedia.org/wiki/Price_elasticity_of_demand
This isn't a black and white, binary scenario here.
