Food and beverages price data from a leading online marketplace is used to compute an online price index. This index successfully tracks the offi cial consumer price index not only at the aggregate level, but also at the subgroup level. The results indicate that online prices can be a quick and effi cient source of price data, which can provide a cheap, but credible, signal of infl ationary pressures on a real-time basis.
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EPW looks forward to your comments. Please note that comments are moderated as per our comments policy. They may take some time to appear. A comment, if suitable, may be selected for publication in the Letters pages of EPW.