The law of demand tells us that when the price of a good falls, quantity demanded will rise. But, firms want to know much more than this. They need to know by how much quantity demanded will rise – we refer to this as the price elasticity of demand (PED) and we can categorise it as relatively inelastic or elastic, depending on by how much demand changes relative to the change in price. The price elasticity of demand is crucial for a firm to know, as it gives them vital information about the best price to charge and getting the price right is probably the most important element in a successful business. As Warren Buffett said in a meeting with the staff from the Federal Crisis Inquiry Commission:
‘Basically, the single most important decision in evaluating a business is pricing power. You’ve the power to raise prices without losing business to a competitor, and you’ve got a very good business. And if you have to have a prayer session before raising the price by a tenth of a cent, then you got a terrible business.’
The grammar may not be entirely correct, but hopefully you get the gist! Should a firm increase price or reduce it? Whatever action it takes, there will be an effect on demand, total revenue and profit. The key question is: what will be the effect? The answer depends on the PED.
If a firm is selling a product for which there are no close substitutes, we would expect demand to be relatively inelastic. This means that the firm can increase the price it charges without seeing any large fall in quantity. On the other hand, if a firm faces a lot of competition and hence there are many substitutes for a product, then demand becomes much more elastic – any increase in a firm’s price will lead to a proportionately larger decrease in the quantity demanded, as customers will simply switch to a cheaper alternative. The article below looks at the concept of price elasticity of demand and how it is used in practice by competing firms.
The importance of pricing power: PEP, CPB Guru Focus (16/10/11)
Pricing strong for Philip Morris in Q3, but volumes also encouraging; dividend yield attractive MorningStar (7/11/11)
Questions
- How do we define price elasticity of demand and what formula can we use to calculate it?
- If a firm faces an PED of –5, is its demand relatively inelastic or elastic and what does it mean about the responsiveness of customer demand to a change in price?
- If a firm faces demand that is (a) relatively inelastic (b) relatively elastic, (c) perfectly elastic (d) perfectly inelastic, what should it do to its price? Explain your answers.
- In the article, ‘The importance of pricing power’, is demand for the ‘Daily Racing Forum’ relatively inelastic or elastic? Explain your answer and what it means in terms of the company’s ability to change price.
- Is demand for cigarettes likely to be inelastic or elastic? Explain your answer. What does this suggest about a firm’s ability to pass on taxation and excise duties to its customers in the form of higher prices?
- Based on the data given in ‘The importance of pricing power’ about the change in demand for Campbell’s Soup and PepsiCo, what conclusions can we reach about PED? How could these firms use this information to set prices and maximise revenue and profit?
- Following a change in supply (due to a factor other than price), when will the impact on equilibrium price be larger than the impact on equilibrium quantity?
This podcast is from BBC Radio 4’s Today Programme. It consists of an interview with James Berresford, chief executive of VisitEngland, and Tracy Corrigan, of the Daily Telegraph on the topic of ‘staycations’ – a term used to refer to people holidaying at home rather than going abroad. Staycations are up, but why is this the case; how much have people switched; and is it really a cheaper option?
More people holidaying in England BBC Today Programme (27/8/09)
See also the following articles:
Unemployment Up In Seaside Resorts Despite Era Of The ‘Staycation’ Fresh Business Thinking (22/8/09)
Unemployment up in seaside resorts despite era of the ‘staycation’ TUC (21/8/09)
Haven Holidays sees rise in caravan sales Times Online (26/8/09)
‘Staycation’ Britons reconsider their holiday plans The National (Abu Dhabi) (28/8/09)
Recession-hit Britons abandon foreign holidays in favour of ‘staycations’ Guardian (13/8/09)
Bad weather puts paid to the Great British Staycation Independent on Sunday (22/8/09)
The following are useful sources of evidence:
Visits to the UK up 4 per cent Office for National Statistics News Release (13/8/09)
1.2 Million More Holidays Taken In England As Brits Take Breaks Closer To Home enjoyEngland (7/8/09)
11.9 million Brits to take U.K break this Bank Holiday enjoyEngland (26/8/09)
Questions
- What are the determinants of demand for staycations? How have these impacted on the demand for staycations in the UK in summer 2009?
- How are the (a) price; (b) income and (c) cross-price elasticities of demand for staycations relevant in determining the demand for staycations?
- Why is imperfect information an important problem in making a decision about where to take a holiday and how do risk attitudes affect the decision?
- Why has unemployment risen more than the UK national average in many seaside towns?
Changes in the price of oil have effects throughout the economy. And it’s not just on the obvious things, such as petrol prices, energy bills and rail, bus and air fares. Most companies are significantly affected by the price of oil, as oil is a key input into their production, whether for transporting their inputs or the goods they produce, or as plastics or other petrochemicals. This is why the price of oil receives so much attention: we’re all affected by it. You will have seen the price of petrol changing dramatically over the past year or so and this is largely due to changing oil prices. The price of oil peaked at $147 a barrel in July 2008 and fell as low as $32 a barrel in December 2008.
So what is it that causes these changes in oil prices and what does it mean for the world’s economies? Read the following articles, which discuss these issues, and look at recent developments in the oil industry.
First fall in oil use since 1993 BBC News (10/6/09)
Trump’s world view Fox News, Interview between Greta van Susteren and Donald Trump (30/6/09) Oil settles above $71; China to boost reserves The Associated Press, Dirk Lammers (29/6/09)
Nigeria worries push up oil price BBC News (29/6/09)
Oil up to near $72 on dollar fall, Nigeria attack Town Hall, Pablo Gorondi (30/6/09)
Chinese demand forecast to boost oil price The Star Phoenix, Joanne Paulson (30/6/09)
Lower oil price hits Total profit BBC News (6/5/09)
Oil price hovers at $70 amid pipeline attacks Financial Times, Miles Johnson, Javier Blas, London (27/6/09)
What is going on in the oil market? BBC News (27/10/08)
Rising oil prices poses threat to recovery, Alistair Darling warns Telegraph (12/6/09)
Fears of oil crunch recede as recession knocks down global demand The Independent, Sarah Arnott (30/6/09)
Questions
- How is the price of oil determined? Give 2 examples of factors that could cause (a) the price of oil to increase and (b) the price of oil to decrease.
- How are company profits affected by the changing price of oil?
- OPEC is an oil cartel. What are the factors that make collusion more likely to succeed? Do they apply to OPEC?
- When prices of oil increase, why do we still use similar amounts of energy; still buy petrol? What’s so special about this commodity? Think about elasticity.
- How is the price and consumption of oil affected by the macroeconomic situation?
The recession of the past few months has taken its toll on organic farmers. Until recently, the industry was booming as consumers switched to products perceived as greener, healthier and more ethically produced. Now, as many consumers are feeling the pinch, they are switching to cheaper foodstuffs. The resulting decline in demand for organic food has turned profit into loss for many organic farmers. According to the first of the linked articles below, at least two organic farmers are leaving the movement each week.
But what will happen as the economy recovers and people start turning back to organic products? Given that it takes some two years to convert to organic standards, there could be supply shortages next year.
As UK shoppers tighten their belts, organic farmers feel the squeeze Guardian (11/4/09)
United Kingdom-Organic slowdown Farming UK (12/4/09)
Can the organics survive the current economy? Limerick Post (10/4/09)
Questions
- How close to perfect competition is the market for organic foods?
- What determines whether an organic farmer should continue in the market even though a loss is being made?
- What can you conclude about the income and price elasticities of demand for organic produce and the cross-price elasticity of demand for organic food with eating out?
- What is likely to happen to the market for organic food over the next two years?
The combination of high global demand for milk and variable weather has led to a rapid rise in the price of milk. Cheese is made from milk (sorry to state the obvious!) and so cheese prices have risen to a new high in excess of £2000 per tonne and further price hikes are expected. One conclusion that could be drawn from this is that it is better to have a takeaway pizza now rather that in a month’s time, but what other effects is this price increase for milk likely to have?
Cheddar hits £2,000 a tonne as global milk demand soars Guardian (15/7/07)
Questions
| 1. |
Identify the key determinants of demand for cheese. |
| 2. |
Using diagrams as appropriate, illustrate and explain the changes that have taken place in the market for cheese. |
| 3. |
Assess the extent to which the price increase for milk can be passed on to consumers of associated products like yoghurt and cheese. |