KDP categories · Top KDP authors
Diseases & Physical Illness: Amazon KDP category data
Amazon Books Best Sellers data for Diseases & Physical Illness, updated Nov 2, 2026: median price $9.34, median 534 reviews, average rating 4.7 and a KDPTop opportunity score of 20/100 (highly competitive).
| Price range (middle 50%) | $7.13 – $11.95 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 2% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 19% of the parent category Health (2,807), one of the easier corners under it.
- Only 2% of its best sellers are under 90 days old, fewer than in 93% of Books categories: established titles hold the list.
- At $9.34 its median price is below 93% of Books categories, so it is a volume game.
Top 10 Diseases & Physical Illness best sellers
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Allergic: A Graphic Novel
- List rank#2
- Price$7.99
- Rating4.6
- Reviews4,466
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Smile: A Graphic Novel
- List rank#3
- Price$7
- Rating4.7
- Reviews21,675
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The Crossover: A Newbery Award Winner―A Slam-Dunk Sports Book for Boys and Girls Ages 8-12 (The Crossover Series, 1)
- List rank#4
- Price$6.18
- Rating4.7
- Reviews6,149
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All Better!
by Bernd Penners
- List rank#5
- Price$8
- Rating4.6
- Reviews2,143
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Wonder
by R. J. Palacio
- List rank#7
- Price$2.99
- Rating4.7
- Reviews87,933
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I Survived the Black Death, 1348 (I Survived #24)
- List rank#8
- Price$6.51
- Rating4.6
- Reviews1,040
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Ghosts: A Graphic Novel
- List rank#9
- Price$7.11
- Rating4.7
- Reviews13,923
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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#10
- Price$4.79
- Rating4.8
- Reviews4,420
FAQ
Is Diseases & Physical Illness a good niche for Amazon KDP?
Its KDPTop opportunity score is 20/100, which makes it highly competitive. The median best seller has 534 reviews and sells for $9.34.
How many reviews do you need to rank in Diseases & Physical Illness?
The median best seller has 534 reviews, and 12% of them have fewer than 100.
What do Diseases & Physical Illness best sellers cost?
The median price is $9.34; half of the best sellers are priced between $7.13 and $11.95.
Can new books break into Diseases & Physical Illness?
2% 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.