This book provides an updated overview of the recent progress in the theoretical study of third-degree price discrimination. It is a marketing tactic and is said to be present if the unit price is different across different groups of buyers. Its welfare evaluation is often difficult because it...

In Japan, the newspaper publishers with the greatest daily circulation offer both morning and evening editions in most of their distribution areas, and many of them allow their customers to choose between morning-only and morning-and-evening subscriptions. Each such newspaper publisher, in...