RT Report T1 Electronic commerce, consumer search and retailing cost reduction A1 Mazón Calpena, Cristina A1 Pereira, Pedro AB This paper explains four things in a unified way. First, how e-commerce can generate priceequilibria, where physical shops either compete with virtual shops for consumers with Internetaccess, or alternatively, sell only to consumers with no Internet access. Second, how these priceequilibria might involve price dispersion on-line. Third, why prices may be higher on-line. Fourth,why established firms can, but need not, be more reluctant than newly created firms to adopt ecommerce.For this purpose we develop a model where e-commerce reduces consumers’ searchcosts, involves trade-offs for consumers, and reduces retailing costs.Se explica la competencia entre las tiendas físicas y las tiendas virtuales, concluyendose cómo el comercio electrónico reduce los costes de búsqueda de los consumidores, implica un "trade-off" para los consumidores, y disminuye los costes de producción de las empresas. PB Instituto Complutense de Análisis Económico YR 2001 FD 2001-06 LK https://hdl.handle.net/20.500.14352/64461 UL https://hdl.handle.net/20.500.14352/64461 LA eng NO JEL Classification: D43, D83, L13, L81, M31, O31, O33 DS Docta Complutense RD 5 abr 2025