Humpshaped Crossprice Effects and the Extensive Margin in Crossborder Shopping

Working Paper: CEPR ID: DP13650

Authors: Frode Steen; Richard Friberg; Simen A. Ulsaker

Abstract: This paper examines the effect of cross-border shopping on grocery demand in Norway using monthly store×category sales data from Norway’s largest grocery chain 2011-2016. The sensitivity of demand to foreign price is hump-shaped and greatest 30-60 minutes’ driving distance from the closest foreign store. Combining continuous demand, fixed costs of cross-border shopping and linear transport costs `a la Hotelling we show how this hump-shape can arise through a combination of intensive and extensive margins of cross-border shopping. Our conclusions are further supported by novel survey evidence and cross-border traffic data.

Keywords: crossborder shopping; competition in grocery markets; product differentiation

JEL Codes: F15; H73; L66; R20


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
cross-border shopping (F55)grocery demand sensitivity (R22)
distance from the border (F55)grocery demand sensitivity (R22)
relative prices (P22)grocery demand (R22)
exchange rate (F31)relative prices (P22)

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