Scandinavian Working Papers in Economics

SSE/EFI Working Paper Series in Economics and Finance,
Stockholm School of Economics

No 351: One good - two prices

Marcus Asplund and Richard Friberg ()
Additional contact information
Marcus Asplund: Dept. of Economics, Stockholm School of Economics, Postal: Stockholm School of Economics, P.O. Box 6501, S-113 83 Stockholm, Sweden
Richard Friberg: Dept. of Economics, Stockholm School of Economics, Postal: Stockholm School of Economics, P.O. Box 6501, S-113 83 Stockholm, Sweden

Abstract: We examine deviations from the law of one price (LOP) with price data from duty-free outlets where each product, at a given location, has its price quoted in (at least) two currencies. Reluctance to adjust relative prices for "small" deviations from LOP allows prices to differ by up to 7-10 percent. Deviations below this level can be very persistent and last up to a decade. Even after accounting for costs of exchanging currency, there are periods with arbitrage opportunities. However, if exchange rates bring prices further out of line then the outlets adjust nominal prices to reduce the deviations from LOP.

Keywords: law of one price; market segmentation; price discrimination; purchasing power parity

JEL-codes: F15; F30; F36

23 pages, January 26, 2000

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Fortchoming as
Marcus Asplund and Richard Friberg, 'One good - two prices', American Economic Review

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