Common Misconceptions About Price Elasticity

Last updated: February 2026

The most common misconception about price elasticity is that it is always constant across different markets and products.

Myth: Price elasticity is the same for all goods and services.
Fact: Cross-price elasticity of demand varies significantly across different markets, with some studies suggesting that the cross-price elasticity of demand for complementary goods, such as Boeing aircraft and General Electric engines, can be as high as 0.8 (Boeing annual report), while it can be as low as -0.2 for substitute goods like Coca-Cola and Pepsi.
Source of confusion: This myth persists due to oversimplification in some introductory economics textbooks, which often fail to account for the complexity of real-world markets.

Myth: A price increase will always lead to a decrease in demand.
Fact: According to Ricardo's comparative advantage model (1817), the demand for certain goods, such as gasoline, can be relatively inelastic, with a price elasticity of -0.3, meaning that a 10% increase in price will only lead to a 3% decrease in demand (US Energy Information Administration).
Source of confusion: This myth persists because of a lack of understanding of the differences between normal and inferior goods, as well as the impact of external factors such as consumer preferences and market competition.

Myth: Price elasticity is only relevant for businesses and has no impact on individual consumers.
Fact: Individuals also make decisions based on price elasticity, as demonstrated by the fact that consumers are more likely to purchase private label products when the price difference with name-brand products is significant, with some studies showing that private label sales increase by 15% when the price difference is 20% or more (Nielsen market research).
Source of confusion: This myth persists due to the common assumption that consumers are not rational decision-makers and do not take price elasticity into account when making purchasing decisions.

Myth: Price elasticity is a fixed trait of a good or service.
Fact: Price elasticity can change over time due to factors such as changes in consumer preferences, income levels, and market competition, as seen in the case of the soft drink industry, where the price elasticity of demand for diet soda has increased significantly in recent years due to growing health concerns (Euromonitor International).
Source of confusion: This myth persists because some economists and business leaders fail to account for the dynamic nature of markets and consumer behavior.

Myth: Price elasticity is only relevant in the short run.
Fact: Price elasticity can have significant long-run implications, as demonstrated by the experience of companies like Amazon, which has been able to maintain low prices and high demand over the long term by continuously investing in efficiency and cost reduction (Amazon annual report).
Source of confusion: This myth persists due to a lack of understanding of the interplay between short-run and long-run market dynamics.

Myth: Price elasticity is the same across different consumer segments.
Fact: Different consumer segments can have significantly different price elasticities, as seen in the case of the airline industry, where business travelers tend to be less price-sensitive than leisure travelers, with a price elasticity of -0.5 compared to -1.2 (International Air Transport Association).
Source of confusion: This myth persists due to the common assumption that consumer behavior is homogeneous across different segments.

Quick Reference

Myth: Constant price elasticity → Fact: Cross-price elasticity of demand varies significantly across different markets (Boeing annual report)
Myth: Price increase always decreases demand → Fact: Demand for certain goods like gasoline can be relatively inelastic (US Energy Information Administration)
Myth: Price elasticity only relevant for businesses → Fact: Individuals also make decisions based on price elasticity (Nielsen market research)
Myth: Price elasticity is a fixed trait → Fact: Price elasticity can change over time due to factors like consumer preferences and market competition (Euromonitor International)
Myth: Price elasticity only relevant in the short run → Fact: Price elasticity can have significant long-run implications (Amazon annual report)
Myth: Price elasticity is the same across different consumer segments → Fact: Different consumer segments can have significantly different price elasticities (International Air Transport Association)
Myth: Price elasticity is not affected by external factors → Fact: External factors like government policies and economic conditions can significantly impact price elasticity (World Trade Organization)