Wireless earbuds on Amazon: ratings and discounts differ sharply across four marketplaces

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A comparison of first search results for wireless earbuds on Amazon's US, Mexico, Brazil and Japan sites, collected on 23 October 2026, found star ratings are not directly comparable across countries. Japan's median rating was 4.0, against 4.4 in the US, 4.5 in Mexico and 4.55 in Brazil, with 19 of 40 Japanese results below 4.0 stars. Mexico showed list-price discounts most often, with 36 of 40 results displaying a list price and a median discount of 39%. Review volumes also varied widely, with the median US product having about 5,300 ratings compared with roughly 570 in Japan and Brazil. The analysis relied on a small, single-day sample using one local-language search per country, so it indicates where to look rather than offering a representative picture of Amazon.

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