KDP categories · Top KDP authors
Diseases (Clinical, Books): Amazon KDP category data
Amazon Books Best Sellers data for Diseases (Clinical, Books), updated Nov 2, 2026: median price $55, median 43 reviews, average rating 4.5 and a KDPTop opportunity score of 30/100 (highly competitive).
| Price range (middle 50%) | $34.99 – $86.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 2% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 14% of the parent category Clinical (312), 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 $55 its median price beats 97% of Books categories, leaving more margin per copy.
Top 10 Diseases best sellers
-
Clinical Pathophysiology Made Ridiculously Simple: Color Edition
by Aaron Berkowitz M.D. Ph.D.
- List rank#1
- Price$37.95
- Rating4.6
- Reviews2,506
-
Harrison's Principles of Internal Medicine, Twenty-Second Edition (Vol.1 & Vol.2)
by Dan Longo
- List rank#2
- Price$179
- Rating4.8
- Reviews151
-
Pfenninger and Fowler's Procedures for Primary Care
by Grant C. Fowler MD
- List rank#3
- Price$141
- Rating4.8
- Reviews470
-
Immunology Made Ridiculously Simple: Color Edition
by Massoud Mahmoudi D.O. Ph.D.
- List rank#4
- Price$29.95
- Rating4.5
- Reviews404
-
Integrative Medicine
by David P. Rakel MD
- List rank#5
- Price$94.99
- Rating4.7
- Reviews96
-
Spillover: Animal Infections and the Next Human Pandemic
- List rank#6
- Price$11.48
- Rating4.7
- Reviews4,924
-
Chimp & the River: How AIDS Emerged from an African Forest
- List rank#7
- Price$11.48
- Rating4.6
- Reviews441
-
Harrison's Principles of Internal Medicine, Twenty-First Edition (Vol.1 & Vol.2)
by Joseph Loscalzo
- List rank#8
- Price$89.99
- Rating4.7
- Reviews477
-
Clinical Microbiology Made Ridiculously Simple: Spiral Bound Color Edition
by Mark T. Gladwin M.D.
- List rank#9
- Price$54.95
- Rating4.7
- Reviews556
-
Never Bet Against Occam: Mast Cell Activation Disease and the Modern Epidemics of Chronic Illness and Medical Complexity
by Lawrence B. Afrin M.D.
- List rank#10
- Price$14.99
- Rating4.7
- Reviews707
FAQ
Is Diseases a good niche for Amazon KDP?
Its KDPTop opportunity score is 30/100, which makes it highly competitive. The median best seller has 43 reviews and sells for $55.
How many reviews do you need to rank in Diseases?
The median best seller has 43 reviews, and 72% of them have fewer than 100.
What do Diseases best sellers cost?
The median price is $55; half of the best sellers are priced between $34.99 and $86.99.
Can new books break into Diseases?
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.