This article discusses the shortage of the highly coveted gold iPhone 5s. It is believed that the gold iPhone 5s has been produced in limited quantity by Apple. Today, the gold iPhone 5s is sold out nearly everywhere around the globe and only a limited quantity of gold iPhone 5s are distributed to different Apple stores, so if you manage to get your hands on a gold iPhone 5s, you are very lucky. From the article, we know that there is a surplus demand for the gold iPhone 5s. The supply of the gold iPhone 5s is fixed as Apple produced only a limited quantity of it. Gold iPhone 5ses have become so in demand that people have paid and are willing to pay US$1800 for it on eBay! Despite this increase in demand for the gold iPhone 5s and this shocking price that the gold iPhone 5s is sold at, Apple still has not revealed of any plans to increase supply of the gold iPhone 5s therefore, the supply of the gold iPhone 5s is perfectly inelastic as the supply elasticity is zero, since the quantity of the gold iPhone 5s does not alter despite the price increase.
The graph below depicts the perfectly inelastic supply of the gold iPhone 5s to the price increase: