Segmentation and price differentiation

This chapter explores how firms with market power can increase profitability through segmentation and price differentiation. When customers vary in their willingness to pay, charging a single price leaves potential profit unrealized. By identifying meaningful criteria—such as customer type, product version, or sales channel—firms can segment the market and tailor prices accordingly. The chapter explains the three degrees of price differentiation: first-degree (perfect), second-degree (based on quantity or quality), and third-degree (based on observable characteristics), and discusses their feasibility in practice. Core economic concepts such as reservation price, consumer surplus, and diminishing marginal utility are illustrated through concrete examples. The chapter also introduces bundling as a strategic alternative when direct differentiation is limited. While segmentation and price differentiation can substantially increase profit and customer alignment, they also introduce practical challenges, including legal constraints, cannibalization, arbitrage, and reputational risk. Various pricing structures—such as two-part tariffs, self-selection mechanisms, and time-based pricing—are introduced as effective tools for implementation. Throughout the chapter, theoretical insights are supported by simple Excel-based examples; more advanced optimization methods for calculating differentiated prices are reserved for later chapters.