This article studies the relationships among the concepts of subsidy-free prices, anonymously equitable prices, supportability, and sustainability. In particular, we set out conditions under which these concepts are not vacuous. Several new sets of conditions under which a subsidy-free price...

We reexamine the role of prices and advertising expenditures as signals of quality. Consumers are either ``fastidious'' or ``indifferent.'' Fastidious individuals value high quality more and low quality less than do indifferent individuals. Then a sensible and robust separating equilibrium...