This zip file contains the replication files for the manuscript. It also contains an online appendix. Summary of the appendix: We provide details of the model in Jullien (2000), which are useful to understand our derivations, in Section A.1. We discuss how the problem of a single seller that we focus on in the empirical analysis could be equivalently interpreted as the problem of an oligopolist in Section A.2. We further elaborate on our identification strategy in Section A.3. We present details of the examples mentioned in Section 3 in the paper in Section B. We present estimation results omitted from the paper in Sections C and D.