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Matthew Walker: Amazon KDP author data
As of Nov 6, 2026, Matthew Walker has 7 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #1), mostly in Sleep Disorders, Internal Medicine, Medicine.
| Median price | $11.40 |
|---|---|
| Price range (middle 50%) | $10.09 – $13.99 |
| Median reviews | 34,665 |
| Total reviews | 213,272 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
Matthew Walker's best-ranked books
-
Why We Sleep: Unlocking the Power of Sleep and Dreams
by Matthew Walker
- Price$13.99
- Rating4.7
- Reviews34,667
-
Why We Sleep: Unlocking the Power of Sleep and Dreams
by Matthew Walker
- Price$11.49
- Rating4.7
- Reviews34,667
-
Why We Sleep: Unlocking the Power of Sleep and Dreams
by Matthew Walker
- Price$10.09
- Rating4.7
- Reviews34,667
-
Why We Sleep: Unlocking the Power of Sleep and Dreams
by Matthew Walker
- Price$16.95
- Rating4.7
- Reviews34,667
- Published2017-10
-
Por que nós dormimos: A nova ciência do sono e do sonho (Portuguese Edition)
by Matthew Walker
- Price$9.99
- Rating4.8
- Reviews5,286
-
Why We Sleep: The New Science of Sleep and Dreams
by Matthew Walker
- Price-
- Rating4.7
- Reviews34,666
-
Why We Sleep: The New Science of Sleep and Dreams
by Matthew Walker
- Price-
- Rating4.7
- Reviews34,667
Main categories
FAQ
How many books does Matthew Walker have on Amazon?
KDPTop tracks 7 of their books; 7 made an Amazon list in the last 30 days.
Which categories does Matthew Walker publish in?
Their books chart most often in Sleep Disorders, Internal Medicine, Medicine.
How does Matthew Walker price their books?
The median price is $11.40; half of the books cost $10.09–$13.99.
Has Matthew Walker released new books recently?
0 new books in the last 30 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.