KDP categories · Top KDP authors
Diseases (Health, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Diseases (Health, Kindle eBooks), updated Nov 2, 2026: median price $4.99, median 164 reviews, average rating 4.6 and a KDPTop opportunity score of 17/100 (highly competitive).
| Price range (middle 50%) | $2.99 – $7.79 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 0% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Only 0% of its best sellers are under 90 days old, fewer than in 99% of Kindle eBooks categories: established titles hold the list.
- At $4.99 its median price is below 91% of Kindle eBooks categories, so it is a volume game.
- Prices spread wide: the middle half runs from $2.99 to $7.79, so budget editions and premium or boxed sets sell side by side.
Top 10 Diseases best sellers
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Allergic: A Graphic Novel
- List rank#2
- Price$7.99
- Rating4.6
- Reviews4,466
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Wonder
by R. J. Palacio
- List rank#3
- Price$2.99
- Rating4.7
- Reviews87,933
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I Want to Be a Doctor: A Career-Focused Story for Children (Ages 4-8) (I Can Read Level 1)
- List rank#4
- Price$2.99
- Rating4.8
- Reviews4,420
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The Snot Book: A Book for Children to Enjoy and Learn about Nose Goop, Mucus, and other Curious Facts (The Bewildering Body 5)
by Mark Bacera
- List rank#7
- Price$2.99
- Rating4.2
- Reviews833
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I Don't Want to Go to the Hospital! (Little Princess)
by Tony Ross
- List rank#8
- Price$8.69
- Rating3.9
- Reviews29
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I Survived the Black Death, 1348 (I Survived #24)
- List rank#9
- Price$3.99
- Rating4.6
- Reviews1,040
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I Feel Sick! (Little Princess)
by Tony Ross
- List rank#10
- Price$9.49
- Rating3.7
- Reviews14
FAQ
Is Diseases a good niche for Amazon KDP?
Its KDPTop opportunity score is 17/100, which makes it highly competitive. The median best seller has 164 reviews and sells for $4.99.
How many reviews do you need to rank in Diseases?
The median best seller has 164 reviews, and 41% of them have fewer than 100.
What do Diseases best sellers cost?
The median price is $4.99; half of the best sellers are priced between $2.99 and $7.79.
Can new books break into Diseases?
0% of the current best sellers were released in the last 90 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.