A striking fact about pricing is the prevalence of \sales": large temporary price cuts followedby prices returning exactly to their former levels. This paper builds a macroeconomic modelwith a rationale for sales based on firms facing customers with different price sensitivities.Even if firms...

In a country with high probability of default, higher interest rates may render the currency lessattractive if sovereign default is costly. This paper develops that intuition in a simple model andestimates the effect of changes in interest rates on the exchange rate in Brazil using data from...

In this paper, the problem of why low-purchasing power silver coins depreciated relative to high-purchasing power gold coins is examined. The standard explanation by Sargent and Velde is refuted. It is argued that the relative stability of gold was due to the demand from consumers able to detect...