Price discrimination is a critical concept in managerial economics, referring to the practice where a firm charges different prices for the same product or service to different consumers or groups of consumers, not due to differences in cost but based on consumers’ willingness to pay. This practice allows firms to capture more consumer surplus and convert it into additional revenue or profit. Price discrimination can be classified into several types, of which first-degree and third-degree price discrimination are particularly significant. Both types involve charging different prices, but the basis, implementation, and implications differ substantially. Understanding these differences is essential for managers when designing pricing strategies that maximize profits while considering market conditions and consumer behavior. First-degree price discrimination, also known as perfect price discrimination, occurs when a firm charges each consumer the maximum price they are willing to pay for a product or service. In other words, the firm captures the entire consumer surplus by setting individualized prices. This form of discrimination requires the firm to have detailed information about each consumer's willingness to pay, which is often difficult in practice. In a market where this is implemented effectively, the firm can extract the entire value of the product for each consumer, leaving no consumer surplus. The main advantage for the firm is that total profit is maximized because every possible dollar a consumer is willing to pay is captured. However, the administrative and informational challenges make this strategy rare in most markets. A classical example of first-degree price discrimination is personalized pricing by professional services such as lawyers, consultants, or auto repair shops. In these cases, the service provider assesses the client’s ability or willingness to pay and adjusts fees accordingly. Another example is auction-based markets, where bidders reveal their maximum willingness to pay, allowing the seller to receive the highest possible price for each item. Third-degree price discrimination, on the other hand, involves segmenting the market into distinct groups based on observable characteristics such as age, location, occupation, or purchase behavior, and charging each group a different price. Unlike first-degree discrimination, it does not require individualized pricing but relies on the identification of broad market segments with varying price elasticities of demand. Firms implement third-degree price discrimination when they can separate