Luxuries can easily be substituted away from and the use of those goods is discretionary. This is also why they are price elastic. Observing the price elasticity of goods allows one to easily determine which goods are necessities and which are luxuries by seeing how easy it is for consumers to alter their consumption patterns. | Luxuries can easily be substituted away from and the use of those goods is discretionary. This is also why they are price elastic. Observing the price elasticity of goods allows one to easily determine which goods are necessities and which are luxuries by seeing how easy it is for consumers to alter their consumption patterns. |