This article discuss the value of the price elasticity of demand for the iPhone. If calculated according to the equation for price elasticity of demand, the iPhone would have a brand elasticity of 4.7, which means that Apple would lose almost 4.7 percent of iPhone sales for each corresponding 1 percent increase in price.

This article is about oil price equilibrium. Global oil demand at the end of the second quarter of 2010 was still less than the level of two years earlier and that recovery in demand was unlikely to induce a further price increase.