Price Discrimination

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AP Microeconomics › Price Discrimination

Questions 1 - 10
1

A monopolist software company sells the same downloadable program. It offers a “Standard” license for $50 and a “Pro” license for $80; both run the same core program, but the Pro license includes extra features that mainly appeal to high willingness-to-pay users. The firm does not directly observe each buyer’s willingness to pay, and it prevents resale with license keys tied to accounts. Based on the monopolist’s pricing strategy, which condition makes this pricing strategy possible?

The firm must be able to sell each unit at marginal cost to maximize profit

The firm must know each buyer’s exact reservation price before setting prices

The firm must operate in a perfectly competitive market to set multiple prices

The firm can design versions so consumers self-select, and resale is limited

The firm must face perfectly inelastic demand from all consumers

Explanation

Price discrimination is a key pricing strategy in microeconomics where a monopolist charges different prices for the same good to capture more consumer surplus. Second-degree price discrimination involves product versioning where buyers self-select into tiers without the firm knowing individual willingness to pay. This exploits differences in valuation for features, with high-WTP users choosing premium versions. The correct answer is the ability to design versions for self-selection and limit resale, enabling the strategy. A common misconception is requiring perfect information on reservation prices, but second-degree uses incentives for revelation. A transferable strategy is to charge higher prices to consumers with less elastic demand to maximize profits. Always check if arbitrage is prevented, as resale would undermine the price differences.

2

A campus gym is the only gym within walking distance. It charges $200 per semester for students and $350 per semester for faculty, and it uses university ID cards to verify status and prevent resale. Students’ demand is more elastic than faculty demand. Based on the monopolist’s pricing strategy, which type of price discrimination is illustrated?

Perfect price discrimination because the gym eliminates consumer surplus for both groups

No price discrimination because both groups receive the same service

Third-degree price discrimination because different identifiable groups are charged different prices

Second-degree price discrimination because price changes only with the number of visits

First-degree price discrimination because each consumer pays their maximum willingness to pay

Explanation

Price discrimination is a key pricing strategy in microeconomics where a monopolist charges different prices for the same good to capture more consumer surplus. Third-degree price discrimination charges different prices to distinct, identifiable groups like students and faculty. Faculty have less elastic demand than students, leading to higher willingness to pay for gym access. The correct answer is third-degree because the gym uses ID verification to segment and charge groups differently. A common misconception is mistaking this for second-degree, but second-degree relies on self-selection into bundles, not group identification. A transferable strategy is to charge higher prices to consumers with less elastic demand to maximize profits. Always check if arbitrage is prevented, as resale would undermine the price differences.

3

A monopolist sells the same prescription drug in two separate markets and can prevent resale across markets. Market 1 has relatively inelastic demand; Market 2 has relatively elastic demand. The firm sets a higher price in Market 1 than in Market 2. Based on the monopolist’s pricing strategy, which condition makes this pricing strategy possible?

The firm must charge the same price in both markets to maximize profit

The firm must have perfect information about each buyer’s exact willingness to pay

The firm can segment markets and prevent arbitrage between them

The firm must face identical demand elasticities in both markets

The firm must be a price taker in both markets

Explanation

Price discrimination is a key pricing strategy in microeconomics where a monopolist charges different prices for the same good to capture more consumer surplus. Third-degree price discrimination is possible when markets can be segmented with no arbitrage between them. This exploits elasticity differences, charging more in inelastic markets where willingness to pay is higher. The correct answer is the ability to segment and prevent arbitrage, allowing higher prices in Market 1. A common misconception is that identical elasticities are required, but actually, differing elasticities enable profitable discrimination. A transferable strategy is to charge higher prices to consumers with less elastic demand to maximize profits. Always check if arbitrage is prevented, as resale would undermine the price differences.

4

A monopolist software firm sells the same app in two separate markets that it can prevent from reselling to each other. Market H has relatively inelastic demand (business users), and Market L has relatively elastic demand (casual users). The firm sets one price in each market. Based on the monopolist’s pricing strategy, which group is charged the higher price and why?

Market L, because charging different prices requires perfect information about each buyer’s willingness to pay

Market H, because marginal cost is higher in Market H than in Market L

Market H, because the profit-maximizing price is higher where demand is less elastic

Both markets, because a monopolist must charge a single uniform price to avoid arbitrage

Market L, because the profit-maximizing price is higher where demand is more elastic

Explanation

This question examines price discrimination, specifically how a monopolist sets different prices across separated markets based on demand elasticity. In third-degree price discrimination, firms charge different prices to different groups based on their price sensitivity. Market H has relatively inelastic demand (business users value the software highly with few substitutes), while Market L has relatively elastic demand (casual users are more price-sensitive). The profit-maximizing monopolist charges the higher price in Market H because consumers there are less responsive to price changes. The correct answer is A: Market H pays more because demand is less elastic there. A common error is thinking elastic consumers pay more, but the opposite is true—monopolists extract higher prices from less elastic (less price-sensitive) consumers. The transferable strategy is straightforward: when practicing third-degree price discrimination, always charge higher prices to groups with less elastic demand, as they're willing to pay more rather than go without the product.

5

A monopolist airline sells the same seat on a route to two identifiable groups and checks eligibility to prevent resale: leisure travelers (more price elastic demand) and business travelers (less price elastic demand). The airline must choose which group to charge the higher fare. Based on the monopolist’s pricing strategy, which group is charged the higher price and why?

Business travelers, because their demand is more price elastic

Business travelers, because their demand is less price elastic

Leisure travelers, because their demand is more price elastic

Leisure travelers, because their demand is less price elastic

Neither group, because price discrimination requires identical demand curves

Explanation

Price discrimination is a key pricing strategy in microeconomics where a monopolist charges different prices for the same good to capture more consumer surplus. Third-degree price discrimination targets identifiable groups with different prices based on their demand curves. Business travelers have less elastic demand, meaning they are less sensitive to price changes and have higher willingness to pay. The correct answer is business travelers pay more because their demand is less elastic, maximizing airline profits. A common misconception is reversing this, thinking elastic groups pay more, but elastic groups get lower prices to increase sales volume. A transferable strategy is to charge higher prices to consumers with less elastic demand to maximize profits. Always check if arbitrage is prevented, as resale would undermine the price differences.

6

A monopolist airline sells the same seat on a route to two groups: business travelers and leisure travelers. It requires a 14-day advance purchase and a Saturday-night stay to qualify for the leisure fare. The leisure fare is $220 and the business fare is $520. The airline cannot identify each traveler’s exact willingness to pay but uses the restrictions to separate buyers. Based on the monopolist’s pricing strategy, which condition makes this pricing strategy possible?

The firm produces with increasing returns, so marginal cost rises as output increases

The firm has constant marginal cost, so it can charge different prices without affecting output

The firm must know every consumer’s reservation price to set the two fares

The firm faces perfectly elastic demand in both groups, so price differences raise profit

The firm can prevent or limit arbitrage so that low-price tickets cannot be resold to high-price buyers

Explanation

This question tests understanding of price discrimination in microeconomics. Third-degree price discrimination requires separating consumers into groups with different elasticities and preventing resale between them. Business travelers likely have less elastic demand due to urgency, while leisure travelers have more elastic demand, leading to price differences. Thus, the correct answer is A, as preventing arbitrage through restrictions ensures low-price buyers cannot resell to high-price ones. A common misconception is that perfect knowledge of individual willingness is needed, but group separation suffices. A transferable strategy is to charge higher prices to consumers with less elastic demand to maximize profits. Always check if arbitrage is prevented, as it's essential for maintaining price differences across segments.

7

A concert venue is the only seller of tickets for a popular artist in a city. It sells 2,000 “floor” tickets for $150 and 3,000 “upper level” tickets for $60. Market research indicates floor-seat buyers are willing to pay up to $180 and have relatively inelastic demand, while upper-level buyers are willing to pay up to $80 and have relatively elastic demand. Tickets are scanned at entry and are nontransferable to prevent resale between categories. Based on the monopolist’s pricing strategy, which type of price discrimination is illustrated?

First-degree price discrimination because each attendee pays exactly their willingness to pay

Third-degree price discrimination because the same event is sold at different prices to different identifiable segments

Second-degree price discrimination because the price depends on the number of tickets purchased

Third-degree price discrimination because arbitrage between ticket categories is easy and unmonitored

No price discrimination because the venue sells tickets for one concert on one date

Explanation

This question tests price discrimination, where a monopolist charges different prices for essentially the same product. Third-degree price discrimination occurs when a firm identifies distinct customer segments with different demand elasticities and charges each segment a different price. The concert venue separates buyers into two groups based on their seat preferences: floor-seat buyers (inelastic demand, willing to pay up to $180) pay $150, while upper-level buyers (elastic demand, willing to pay up to $80) pay $60. The venue prevents arbitrage through nontransferable tickets that are scanned at entry, ensuring floor-ticket holders can't resell to upper-level buyers. A misconception is thinking this is second-degree discrimination because of quantity differences, but the key is that buyers are segmented by identifiable preferences (seat location) rather than self-selecting from a menu. The transferable principle remains consistent: monopolists charge higher prices to less elastic segments and lower prices to more elastic segments. Successful third-degree discrimination requires both market segmentation and effective arbitrage prevention through ticket scanning and transfer restrictions.

8

A monopolist medical clinic charges $40 for a flu shot to seniors and $70 to nonseniors. The clinic verifies age and does not allow resale. Demand among seniors is more elastic because many seniors can receive free shots at community events. Based on the monopolist’s pricing strategy, which group is charged the higher price and why?

Seniors, because the clinic charges a higher price to the group with more elastic demand

Nonseniors, because charging different prices is uniform pricing, not discrimination

Seniors, because price discrimination requires perfect information about each senior’s willingness to pay

Nonseniors, because the clinic charges a higher price to the group with less elastic demand

Both groups, because arbitrage ensures both groups pay the same price

Explanation

This question examines price discrimination, specifically how monopolists exploit differences in demand elasticity between groups. The clinic practices third-degree price discrimination by charging seniors $40 and nonseniors $70 for identical flu shots. Seniors have more elastic demand because they have substitutes (free shots at community events), making them more price-sensitive and likely to seek alternatives if prices rise. The monopolist maximizes profit by charging the higher price ($70) to nonseniors who have less elastic demand and fewer alternatives, while charging the lower price ($40) to seniors with more elastic demand. The correct answer is B because monopolists always charge higher prices to groups with less elastic (less price-sensitive) demand. A common error is thinking discrimination requires perfect information about individuals—third-degree discrimination only requires identifying group membership and elasticity differences. The key strategy is recognizing that consumers with more substitutes have more elastic demand and therefore pay lower prices, while those with fewer substitutes have less elastic demand and pay higher prices.

9

A monopolist museum charges $5 admission for children (ages 6–17) and $20 admission for adults (ages 18+). The museum checks IDs at entry and does not allow ticket resale. Market research indicates adults have fewer close substitutes and therefore a less elastic demand than children. Based on the monopolist’s pricing strategy, which group is charged the higher price and why?

Adults, because the monopolist charges a higher price to the group with less elastic demand

Children, because marginal cost of serving children is higher than serving adults

Adults, because price discrimination requires knowing each adult’s exact willingness to pay

Neither group, because charging different prices is impossible for a monopolist

Children, because the monopolist charges a higher price to the group with more elastic demand

Explanation

This question examines price discrimination, specifically how monopolists set prices based on demand elasticity differences between groups. The museum practices third-degree price discrimination by charging different prices to identifiable age groups: children pay $5 while adults pay $20. Adults have less elastic demand because they have fewer close substitutes for museum visits (children might prefer playgrounds, video games, or other activities), making them less price-sensitive. The monopolist maximizes profit by charging the higher price ($20) to the group with less elastic demand (adults) and the lower price ($5) to the more elastic group (children). The correct answer is B because monopolists always charge higher prices to less elastic consumers who are willing to pay more rather than forgo the product. A common error is reversing the elasticity relationship—remember that less elastic means less responsive to price, so these consumers will tolerate higher prices. The strategy for these problems is straightforward: identify which group has more substitutes (more elastic) and which has fewer substitutes (less elastic), then apply the rule that less elastic groups pay higher prices.

10

A monopolist streaming service charges $6 per month to customers with a verified college email address and $12 per month to all other customers. The service verifies eligibility and prevents account sharing across the two plans. Based on the monopolist’s pricing strategy, which condition makes this pricing strategy possible?

The firm must charge a single price to all consumers to maximize profit

The firm must have perfect information about each individual’s exact willingness to pay

The firm must be able to identify and separate consumers into distinct groups

The firm must have marginal cost equal to zero for digital services

The firm must face perfectly inelastic demand in both groups

Explanation

This question addresses price discrimination, focusing on the conditions necessary for charging different prices to different groups. The streaming service practices third-degree price discrimination by charging $6 to verified college students and $12 to all others, based on the assumption that students have more elastic demand due to lower incomes and more entertainment substitutes. For third-degree discrimination to work, the firm must be able to identify and separate consumers into distinct groups with different demand elasticities. The correct answer is A because the service must verify college email addresses to separate students from non-students and prevent non-students from accessing the student price. A common misconception is thinking the firm needs perfect information about each individual's willingness to pay (that's first-degree discrimination) or that marginal cost must be zero (irrelevant to discrimination ability). The transferable principle is that third-degree price discrimination requires observable characteristics to sort consumers into groups—without identification and separation, everyone would claim to be in the low-price group.

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