Disclaimer: Supplementary materials have been peer-reviewed but not copyedited.

rand12040-sup-0001-SuppMat.pdf269KWeb Appendix C contains relegated material on equilibrium existence and uniqueness. Web Appendix D contains the derivation of demand in the n-firm oligopoly. Web Appendixes E and F contain two extensions in which consumers receive noisy signals about their match value ex ante and in which consumers experience search costs, as discussed in Section 5 in the article.

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