Prices and Information

by Jerry O’Driscoll  

In the recent discussion of Say’s Law, the issue of “sticky” prices came up. The term is the source of much confusion. The opposite of “sticky” prices is not “flexible” prices, but infinitely flexible prices. No matter how flexible a price, short of infinite flexibility, there will be quantity responses. Quantity responses are an inherent part of market economies, do not signal market imperfections, and do not typically trigger income-constrained processes.  

Price setting incurs information costs. How does a producer or  retailer know when to change his prices? Where does that information  come from?   Continue reading