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Last Updated Sep 26, 2025
Revision notes with simplified explanations to understand Price Elasticity of Demand (PED) quickly and effectively.
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đź”— The extent to which a change in price will cause a change in demand
Price elasticity of demand = % Change in quantity demanded / %change in price
Price elastic = answer is greater than 1
Price inelastic = answer is between 0 and 1
EXACTLY 1 = UNITARY PRICE ELASTICITY = Change in demand is equal to change in price
Brand strength đź”— Brand strength results in higher customer loyalty, making the products more price inelastic.
Availability of substitutes đź”— More available substitutes result in a more elastic PED. Consumers are more sensitive to price as there is greater consumer choice. Therefore, they can easily find a cheaper alternative product if the price of one rises.
Other factors:
đź”— Luxury goods have an elastic PED, whereas goods that are a necessity, have an inelastic PED due to them being required by consumers
đź”— A USP and a unique product can make demand more inelastic, due to other businesses not offering the same product, resulting in there being fewer substitutes
Increase in price = Decrease in total revenue (deterring customers with higher prices)
Decrease in price = Increase in total revenue (attracting customers with lower price)
Increase in price = Increase in total revenue (people still buy no matter what the price is)
Decrease in price = Decrease in total revenue (a lower price means people think quality has dropped so stop buying)
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