Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/286360 
Authors: 
Year of Publication: 
2023
Series/Report no.: 
IES Working Paper No. 31/2023
Publisher: 
Charles University in Prague, Institute of Economic Studies (IES), Prague
Abstract: 
How often do online retailers change prices? Are there any differences in their price rigity? I collected and analysed more than 4 million daily prices of online grocery retailers from Czechia during the unprecedented period between January 2020 and April 2021. There are substantial differences in pricing among the four retailers. The mean number of all price changes ranges among the retailers between 3.10 and almost 11 per year. Most of the price changes are temporary. Retailers change prices permanently on average between 0.68 to 4.04 times per year. The differences in pricing persist even after the disaggregation of the products into individual categories and even in the estimation of the within-between model of the probability of price change. An in-depth analysis of temporary price adjustments is crucial to robustly assess pricing and price rigidity. It is likely to explain part of the discrepancy in pricing found across the retailers.
Subjects: 
price setting
price exibility
scraped prices
temporary price changes
JEL: 
E30
D22
L11
L81
M21
Document Type: 
Working Paper

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