Amazon Consumer Reviews & Ratings

Customer reviews and ratings are a trailing indicator of sales and consumer satisfaction. They are also a form of social proof, and a high number of positive reviews significantly improves conversion rates.

Number of reviews

Books should have as many legitimate customer reviews as possible. Reviews may be submitted regardless of where or how a book was read, though it is vitally important that the reviews are authentic and not "bought".

Consider providing reviewers with advanced reading copies (physical or digital) and /or engaging with readers on social networks such as Goodreads, Facebook, or Twitter to encourage more retail reviews.

Star rating

For most products, conversion rate will increase proportional to a higher star rating. Ideally, the average customer rating should be 4 stars and up.

Per Amazon: "Amazon calculates a product's star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases."

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Marketing Insights monitors the number and the quality of reviews and ratings submitted by consumers. Your most recent reviews and ratings data can be found in the Amazon Customer Reviews snapshot panel, and detailed review and rating history (since we began monitoring your title) can be found alongside in the Amazon Review Activity chart.

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