In this paper we develop the implications of competitive market equili
brium for production and household behavior when some prices are endog
enously determined. The properties of market equilibrium functions are
explored, including the effects of pricing policy. A Slutsky-type equ
ation relating compensated and uncompensated market equilibrium functi
ons is derived. Implications for multimarket welfare analysis are pres
ented, focusing on the effects of pricing policy and technical change.