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$

$4 and $3

If the customer values a pint of Jane’s beer at $9 and pays $5 for it, they have ‘saved’ $4 that they would have happily spent. This is their consumer surplus.



A

alcopop

Really? You don't know what alcopops are?

OK, here we go !


B

B – C

Remember the formula for value creation: value created = benefits perceived by the consumer (B) – the costs incurred by the producer (C).



bottle shop

Alcoholic beverages are not sold in supermarkets in Australia but in specialised stores known as bottle shops. In the US, they are called liquor stores and in the UK, off-licences or ‘offies’.


C

consumer surplus

Consumer surplus is generated when the consumer feels that they get more benefit (B) out of the product compared to the price (P) that they pay to obtain it. Consumer surplus occurs when B – P > 0. The market equilibrium price denotes B – P = 0. All points in the demand curve to the left of the equilibrium denote B – P > 0, or consumer surplus.


contract brew

Read more about contract brewing here.


D

demand curve

Demand curve depicts the consumers’ maximum willingness to pay: how many units of the product are consumers willing to buy at a given price. This curve is downward sloping: consumers are generally willing to buy more when the price is low. On a market level, this means that there are more consumers willing to buy the product if the price is low, compared to when the price is high.




duopoly equilibrium

The following explanation of how the duopoly equilibrium quantities were derived is for those interested – learning all the computations is not necessary to complete the course.

 

The duopoly price and quantities are based on insights from the so-called Cournot duopoly model. According to this model, the profit-maximising equilibrium outcome for two identical firms – which we assume Jane and Emma to run because they have identical cost structures and sell a homogeneous product – is to produce equal quantities. These two quantities jointly clear the market, meaning that the price is lowered until all that is produced is sold.

 

The following explains how the equilibrium price and quantity were determined. Emma’s profit (Π)function is as follows:

 

ΠEmma = Revenue – Total cost =

P*QEmma– TCEmma =

(100 – QEmma– QJane)QEmma– (800 + 10QEmma) =

100QEmma– QEmma2– QEmma*QJane– 800 – 10QEmma =

90QEmma– QEmma2– QEmma*QJane– 800

 

Emma maximises her profit by (we treat QJane as a constant):

 

ΠEmma/QEmma = 90 – 2QEmma– QJane

90 – 2QEmma– QJane = 0

-2QEmma = -90 + QJane

QEmma = 45 – 0.5QJane

 

The final equation is Emma’s reaction function. It gives Emma’s best response to whatever quantity Jane chooses to produce (QJane). Because Jane’s firm is identical to Emma’s, her reaction function is QJane = 45 – 0.5QEmma.

 

Based on the reaction functions, we can solve the market clearing (equilibrium) quantity as follows:

 

QEmma = 45 – 0.5(45 – 0.5QEmma)

QEmma = 45 – 22.5 – 0.25QEmma

0.75QEmma = 22.5

QEmma = 30

 

Because Jane’s reaction function is a mirror image of Emma’s, the resulting quantity would be the same. Thus, in a Cournot duopoly equilibrium, Emma and Jane would choose to produce 30 casks of beer each which results in a market price of (P = 100 – 30 – 30) of $40.



E

equilibrium

You can read more about market equilibrium here.


F

fundamental transformation

Oliver Williamson refers to this as fundamental transformation: before investing in relationship-specific assets, the buyer can buy from any number of competing sellers (a ‘large numbers’ bargaining situation); after the investment, buying from anyone else than the current seller incurs an additional cost known as the switching cost (a ‘small numbers’ bargaining situation).



I

incomplete contracts

Factors that prevent complete contracting

  • Bounded rationality: Individuals have limited capacity to process information so they cannot know everything and foresee all possible contingencies that can arise over the course of a business relationship. Therefore, they cannot draw contracts that cover everything.
  • Difficulties in specifying/measuring performance: It can be debated what performance of a partner constitutes fulfilment of a contract because performance cannot always (or even often) be measured unambiguously.
  • Asymmetric information: Seller can have more relevant information that the buyer and the seller can use this information opportunistically. Contracting on items that are prone to information asymmetry is difficult.

incumbents

Incumbent is a firm that is already operational in a market. Entrant is a firm that is aspiring to enter the market.


indifference curve

Indifference curve denotes different combinations of price and quality that are of equal value to the consumer. So the consumer would be indifferent between choosing a higher quality product for a higher price, or a lower quality product with a correspondingly lower price.




information asymmetry

Information asymmetry means that Jane knows more about her business and future intentions than Emma, and vice versa. For example, Jane knows that she doesn’t have a cost advantage but she counts on Emma not knowing that, and uses this to her advantage.


M

market equilibrium

Market equilibrium price and quantity are found at the intersection of the supply and demand curves.




market structures


maximum willingness to pay

How many units of a product are consumers willing to buy at a given price or what is the maximum dollar amount they are willing to pay for a unit of the product.


Michael Porter

Read more about Michael Porter here


N

nash equilibrium

Read more about nash equilibrium here.


normal profit

Profits that are sufficient to keep the firm in business but not enough to make the entrepreneur rich.


O

opportunity cost

Opportunity cost refers to the benefit that a person gave up by deciding to take a particular course of action. Because every resource (money, time, physical assets) can be put to alternative uses, every action carries an opportunity cost. This is an important consideration in decision making in business.

You can find a more detailed explanation of the concept here:

http://www.econlib.org/library/Enc/OpportunityCost.html



P

P=MC

Price equals marginal cost, meaning the price just covers the cost of producing that unit of beer but selling that unit of beer does not generate any profit.


prevent

Because firms can enter and exit costlessly, no single firm can prevent another firm from entering nor would it make any sense to do so because there are numerous competitors anyway in perfectly competitive markets and all of them have to sell at the market price. So there is no incentive to take aggressive action, such as price-cutting, against competitors.



producer surplus

Producer surplus is the flip side of consumer surplus. It is defined as the difference between the price (P) that the consumer pays for the product, and the cost (C) to the firm of making that product. If P – C > 0, the firm is making money and generating producer surplus.


R

recoup

We could assume, for example, that Emma could resell her brewing equipment at exactly the same price that she originally bought them if she exited the business. We could also assume that she would not need to invest in advertising, which is typical sunk cost for a new business.



S

short run

Short run refers to a situation when one factor of production is held fixed. For example, tank capacity in Jane’s brewery is fixed in the short run because increasing it would require investments in further tanks, which she cannot do immediately. However, she can make such investments in the long run.


Supply curve

Supply curve depicts the quantities that a producer is willing to supply for different prices. This curve is upward sloping: a producer is happy to supply more if the price is high. On a market level, this also means that when the price is high, there are more suppliers willing to operate in the market.


T

transaction cost

Please find an explanation about the transaction cost economic theory here.


transaction costs

In a broader sense, transaction costs refer to the costs inherent in economic transactions that are not part of the price paid for a product or service. For example, many people would pay $3 for an ice-cream in a parlour 100 metres from their home, than drive 3 km to another parlour for the exact same ice-cream for $2. Why? Because the transaction cost of petrol, time and effort involved in driving those 3 km there and back are greater than the $1 saving in the price of the ice-cream.



V

value chain



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