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The Informational Role of Prices *
Author(s) -
Mirman Leonard J.,
Santugini Marc
Publication year - 2019
Publication title -
the scandinavian journal of economics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.725
H-Index - 64
eISSN - 1467-9442
pISSN - 0347-0520
DOI - 10.1111/sjoe.12272
Subject(s) - economics , economic surplus , order (exchange) , microeconomics , welfare , quality (philosophy) , residual , competitive equilibrium , monetary economics , market economy , philosophy , finance , epistemology , algorithm , computer science
We consider a dominant firm with a competitive fringe in order to investigate the informational role of prices. The fringe is necessary for the existence of a unique, fully revealing equilibrium, in which the price reveals the quality of the good to uninformed buyers. A higher price triggers more sales on the part of the competitive fringe, reducing both residual demand and profits. We find that a larger share of uninformed buyers increases the price and reduces the quantity sold by the dominant firm, but increases the quantity sold by the competitive fringe. This, in turn, reduces consumer surplus and welfare.