TY - JOUR AU - Balistreri,Edward J. AU - Markusen,James R. TI - Sub-national Differentiation and the Role of the Firm in Optimal International Pricing JF - National Bureau of Economic Research Working Paper Series VL - No. 13130 PY - 2007 Y2 - May 2007 UR - http://www.nber.org/papers/w13130 L1 - http://www.nber.org/papers/w13130.pdf N1 - Author contact info: Edward J. Balistreri Division of Economics and Business Colorado School of Mines Golden, CO 80401-1887 E-Mail: ebalistr@mines.edu James R. Markusen Department of Economics University of Colorado Boulder, CO 80309-0256 Tel: 303/492-0748 Fax: 303/492-8960 E-Mail: james.markusen@colorado.edu AB - We illuminate the relationship between optimal firm pricing and optimal trade policy by exploring a generalized model that accommodates product differentiation at both the national and sub-national (firm) levels. We assume monopolistic competition in the differentiated products at the sub-national level. When the national and sub-national substitution elasticities are similar we find little opportunity for small countries to improve their terms of trade through trade distortions, because firms play an important preemptive role in optimally pricing unique varieties. We contrast this with standard applications of perfect-competition Armington models, which exhibit high optimal tariffs--even for relatively small countries. ER -