Cobweb dynamics and price dispersion in illicit drug markets
Extreme price dispersion is a hallmark of illegal drug markets, and this apparent contradiction to the law of one price has long puzzled drug market economists. We propose a novel explanation for this dispersion: the coupling of dealers' unwillingness to hold inventory with dealers' imperfect foresight concerning future prices and/or random lead times when "ordering" drugs from higher-level suppliers. Unwillingness to hold inventory means drug markets might operate consistent with a cobweb model. The classic cobweb model was inspired by the observation of cyclic (typically annual) fluctuations in commodity prices. However, with minor changes that make the model more realistic the resulting price trajectories can be highly variable or even chaotic, not just periodic. Cobweb dynamics can also amplify the variability created by supply chain disruptions.
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- George J. Stigler, 1961. "The Economics of Information," Journal of Political Economy, University of Chicago Press, vol. 69, pages 213.
- Frank J. Chaloupka & Michael Grossman & John A. Tauras, 1998.
"The Demand for Cocaine and Marijuana by Youth,"
NBER Working Papers
6411, National Bureau of Economic Research, Inc.
- Frank J. Chaloupka & Michael Grossman & John A. Tauras, 1999. "The Demand for Cocaine and Marijuana by Youth," NBER Chapters, in: The Economic Analysis of Substance Use and Abuse: An Integration of Econometrics and Behavioral Economic Research, pages 133-156 National Bureau of Economic Research, Inc.
- Steven D. Levitt & Sudhir Alladi Venkatesh, 2000.
"An Economic Analysis Of A Drug-Selling Gang'S Finances,"
The Quarterly Journal of Economics,
MIT Press, vol. 115(3), pages 755-789, August.
- Steven D. Levitt & Sudhir Alladi Venkatesh, 1998. "An Economic Analysis of a Drug-Selling Gang's Finances," NBER Working Papers 6592, National Bureau of Economic Research, Inc.
- Fildes, Robert, 1992. "The evaluation of extrapolative forecasting methods," International Journal of Forecasting, Elsevier, vol. 8(1), pages 81-98, June.
- Walsh, Patrick Paul & Whelan, Ciara, 1999. "Modelling Price Dispersion as an Outcome of Competition in the Irish Grocery Market," Journal of Industrial Economics, Wiley Blackwell, vol. 47(3), pages 325-43, September.
- Dhaval Dave, 2004.
"The Effects of Cocaine and Heroin Prices on Drug-Related Emergency Department Visits,"
NBER Working Papers
10619, National Bureau of Economic Research, Inc.
- Dave, Dhaval, 2006. "The effects of cocaine and heroin price on drug-related emergency department visits," Journal of Health Economics, Elsevier, vol. 25(2), pages 311-333, March.
- Goeree, Jacob K. & Hommes, Cars H., 2000. "Heterogeneous beliefs and the non-linear cobweb model," Journal of Economic Dynamics and Control, Elsevier, vol. 24(5-7), pages 761-798, June.
- Dave, Dhaval, 2008. "Illicit drug use among arrestees, prices and policy," Journal of Urban Economics, Elsevier, vol. 63(2), pages 694-714, March.
- Clay, Karen & Krishnan, Ramayya & Wolff, Eric, 2001.
"Prices and Price Dispersion on the Web: Evidence from the Online Book Industry,"
Journal of Industrial Economics,
Wiley Blackwell, vol. 49(4), pages 521-39, December.
- Karen Clay & Ramayya Krishnan & Eric Wolff, 2001. "Prices and Price Dispersion on the Web: Evidence from the Online Book Industry," NBER Chapters, in: E-commerce, pages 521-539 National Bureau of Economic Research, Inc.
- Karen Clay & Ramayya Krishnan & Eric Wolff, 2001. "Prices and Price Dispersion on the Web: Evidence from the Online Book Industry," NBER Working Papers 8271, National Bureau of Economic Research, Inc.
- Frank Chen & Zvi Drezner & Jennifer K. Ryan & David Simchi-Levi, 2000. "Quantifying the Bullwhip Effect in a Simple Supply Chain: The Impact of Forecasting, Lead Times, and Information," Management Science, INFORMS, vol. 46(3), pages 436-443, March.
- Hommes, Cars H., 1991. "Adaptive learning and roads to chaos : The case of the cobweb," Economics Letters, Elsevier, vol. 36(2), pages 127-132, June.
- Alan T. Sorensen, 2000. "Equilibrium Price Dispersion in Retail Markets for Prescription Drugs," Journal of Political Economy, University of Chicago Press, vol. 108(4), pages 833-862, August.
- Hommes, Cars H., 1998. "On the consistency of backward-looking expectations: The case of the cobweb," Journal of Economic Behavior & Organization, Elsevier, vol. 33(3-4), pages 333-362, January.
- Michael Smith & Erik Brynjolfsson, 1999.
"Frictionless Commerce? A Comparison of Internet and Conventional Retailers,"
Computing in Economics and Finance 1999
1022, Society for Computational Economics.
- Erik Brynjolfsson & Michael D. Smith, 2000. "Frictionless Commerce? A Comparison of Internet and Conventional Retailers," Management Science, INFORMS, vol. 46(4), pages 563-585, April.
- Salop, S & Stiglitz, J E, 1982. "The Theory of Sales: A Simple Model of Equilibrium Price Dispersion with Identical Agents," American Economic Review, American Economic Association, vol. 72(5), pages 1121-30, December.
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