An important determinant of price elasticity of demand is

The price elasticity of demand measures the responsiveness of quantity demanded to changes in price. One of the main determinants of price elasticity of demand is the ease of substitution, which refers to the availability of alternative products or services that consumers can switch to in response to a change in price. The easier it is for consumers to find substitutes, the more elastic the demand for a product will be. Other factors that can affect price elasticity of demand include the degree of necessity of the product, the proportion of income spent on the product, and the availability of close complements or substitutes. Government policy can indirectly affect price elasticity of demand by influencing factors such as consumer income, availability of substitutes, and market competition.