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Chapter 11
Pricing with Market PowerPricing with
Market Power
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Chapter 11 Slide 2
Topics to be Discussed
Capturing Consumer Surplus
Price Discrimination
Intertemporal Price Discrimination and Peak-Load Pricing
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Chapter 11 Slide 3
Introduction
Pricing without market power (perfect competition) is determined by market supply and demand.
The individual producer must be able to forecast the market and then concentrate on managing production (cost) to maximize profits.
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Chapter 11 Slide 4
Introduction
Pricing with market power (imperfect competition) requires the individual producer to know much more about the characteristics of demand as well as manage production.
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Chapter 11 Slide 5
Capturing Consumer Surplus
Quantity
$/Q
D
MR
Pmax
MC If price is raised above P*, the firm will lose
sales and reduce profit.
PC
PC is the pricethat would exist in
a perfectly competitivemarket.
A
P*
Q*
P1
Between 0 and Q*, consumerswill pay more than
P*--consumer surplus (A).
B
P2
Beyond Q*, price willhave to fall to create a consumer surplus (B).
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Chapter 11 Slide 6
Price Discrimination
First Degree Price DiscriminationCharge a separate price to each customer:
the maximum or reservation price they are willing to pay.
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Chapter 11 Slide 7
P*
Q*
Without price discrimination,output is Q* and price is P*.Variable profit is the area
between the MC & MR (yellow).
Additional Profit From Perfect First-Degree Price Discrimination
Quantity
$/Q Pmax
With perfect discrimination, eachconsumer pays the maximumprice they are willing to pay.
Consumer surplus is the area above P* and between
0 and Q* output.
D = AR
MR
MC
Output expands to Q** and pricefalls to PC where MC = MR = AR = D.
Profits increase by the area above MCbetween old MR and D to output
Q** (purple)
Q**
PC
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Chapter 11 Slide 8
QuestionWhy would a producer have difficulty in
achieving first-degree price discrimination?
Answer
1) Too many customers (impractical)
2) Could not estimate the reservation price for each customer
Additional Profit From Perfect First-Degree Price Discrimination
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Chapter 11 Slide 9
Price Discrimination
First Degree Price DiscriminationExamples of imperfect price discrimination
where the seller has the ability to segregate the market to some extent and charge different prices for the same product:
Lawyers, doctors, accountantsCar salesperson (15% profit margin)Colleges and universities
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Chapter 11 Slide 10
First-Degree PriceDiscrimination in Practice
Quantity
D
MR
MC
$/Q
P2
P3
P*4
P5
P6
P1
Six prices exist resultingin higher profits. With a single priceP*4, there are fewer consumers and
those who now pay P5 or P6 may have a surplus.
Q
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Second-Degree Price Discrimination
Quantity
$/Q
D
MR
MC
AC
P0
Q0
Without discrimination: P = P0 and Q = Q0. With second-degree
discrimination there are threeprices P1, P2, and P3.(e.g. electric utilities)
P1
Q1
1st Block
P2
Q2
P3
Q3
2nd Block 3rd Block
Second-degree pricediscrimination is pricing
according to quantityconsumed--or in blocks.
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Second-Degree Price Discrimination
Quantity
$/Q
D
MR
MC
AC
P0
Q0
P1
Q1
1st Block
P2
Q2
P3
Q3
2nd Block 3rd Block
Economies of scale permit:•Increase consumer welfare•Higher profits
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Chapter 11 Slide 13
Price Discrimination
Third Degree Price Discrimination
1) Divides the market into two-groups.
2) Each group has its own demand function.
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Chapter 11 Slide 14
Price Discrimination
Third Degree Price Discrimination
3) Most common type of pricediscrimination.
Examples: airlines, liquor, vegetables, discounts to students and senior citizens.
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Chapter 11 Slide 15
Price Discrimination
Third Degree Price Discrimination
4) Third-degree price discrimination is feasible when the seller can separate his/her market into groups who have different price elasticities of demand (e.g. business air travelers versus vacation air travelers)
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Chapter 11 Slide 16
Price Discrimination
Third Degree Price DiscriminationObjectives
MR1 = MR2
MR1 = MR2 = MC
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Chapter 11 Slide 17
Price Discrimination
Third Degree Price DiscriminationDetermining relative prices
)11()11(
11
222111 EPMREPMR
EPMR d
:Then
:Recall
)11(
)11(
1
2
2
1
E
E
P
P
:And
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Chapter 11 Slide 18
Price Discrimination
Third Degree Price DiscriminationPricing: Charge higher price to group with
a low demand elasticity
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Chapter 11 Slide 19
Price Discrimination
Third Degree Price Discrimination
Example: E1 = -2 & E2 = -4
P1 should be 1.5 times as high as P2
5.1
2143
)211(
)411(
2
1
P
P
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Chapter 11 Slide 20
Third-Degree Price Discrimination
Quantity
D2 = AR2
MR2
$/Q
D1 = AR1MR1
Consumers are divided intotwo groups, with separate
demand curves for each group.
MRT
MRT = MR1 + MR2
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Chapter 11 Slide 21
Third-Degree Price Discrimination
Quantity
D2 = AR2
MR2
$/Q
D1 = AR1MR1
MRT
MC
Q2
P2
QT
•QT: MC = MRT
•Group 1: P1Q1 ; more inelastic•Group 2: P2Q2; more elastic•MR1 = MR2 = MC•MC depends on QT
Q1
P1
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Chapter 11 Slide 22
The Economics of Coupons and Rebates
Those consumers who are more price elastic will tend to use the coupon/rebate more often when they purchase the product than those consumers with a less elastic demand.
Coupons and rebate programs allow firms to price discriminate.
Price DiscriminationPrice Discrimination
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Chapter 11 Slide 23
Price Elasticities of Demand for Users Versus Nonusers of Coupons
Toilet tissue -0.60 -0.66
Stuffing/dressing -0.71 -0.96
Shampoo -0.84 -1.04
Cooking/salad oil -1.22 -1.32
Dry mix dinner -0.88 -1.09
Cake mix -0.21 -0.43
Price Elasticity
Product Nonusers Users
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Chapter 11 Slide 24
Cat food -0.49 -1.13
Frozen entrée -0.60 -0.95
Gelatin -0.97 -1.25
Spaghetti sauce -1.65 -1.81
Crème rinse/conditioner -0.82 -1.12
Soup -1.05 -1.22
Hot dogs -0.59 -0.77
Price Elasticity
Product Nonusers Users
Price Elasticities of Demand for Users Versus Nonusers of Coupons
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Chapter 11 Slide 25
The Economics of Coupons and Rebates
Cake Mix
Nonusers of coupons: PE = -0.21
Users: PE = -0.43
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Chapter 11 Slide 26
The Economics of Coupons and Rebates
Cake Mix Brand (Pillsbury)
PE Pillsbury 8 to 10 times PE all cake mix
Example: elasticity of demand for Pillsbury cake mix
PE Users of coupons: -4 (-0.43 all cake mix)
PE Nonusers: -2 (-0.21 all cake mix)
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Chapter 11 Slide 27
The Economics of Coupons and Rebates
Using:
Price of nonusers should be 1.5 times users
Or, if cake mix sells for $1.50, coupons should be 50 cents
)11(
)11(
1
2
2
1
E
E
P
P