Several network operators have been deploying Quality of Service (QoS) techniques that help improve customer satisfaction and can have an impact on the cost of telecommunications services. As Long-Run Incremental Cost (LRIC) models are used in various jurisdictions to derive the cost of...

We start the survey by reviewing the implications of horizontal and vertical product differentiation on market structure under the assumption of single-product firms. Then, we analyze the main results of the multi-product firm models, both when variants are assumed differentiated in vertical...

We use data from eBay Best Offer listings to analyze haggling over prices in transactions with one seller and a series of potential buyers for a limited-supply product. We characterize this transaction mechanism as a sequential-move game to investigate buyer behavior. Our model suggests that a...

The popular Internet marketplace, eBay, introduced the Best Offer format in 2005. This paper studies buyer's behavior under such a mechanism. We characterize this mechanism as a sequential-move game between the seller of an item and its buyers. Our model suggests that a rational buyer's offer...

This paper examines the role of sales (temporary price reductions) in the pricing of perishable products. When products can be stored, periodic sales are commonly explained using inventories: the ability to store lets consumers wait for better prices, and so they have a more elastic demand. When...