KDP categories · Top KDP authors
Research (Medical Books, Books): Amazon KDP category data
Amazon Books Best Sellers data for Research (Medical Books, Books), updated Nov 3, 2026: median price $24.99, median 49 reviews, average rating 4.6 and a KDPTop opportunity score of 34/100 (highly competitive).
| Price range (middle 50%) | $15.99 – $46.51 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 4% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 1% of the parent category Medical Books (4,183), one of the easier corners under it.
- Only 4% of its best sellers are under 90 days old, fewer than in 82% of Books categories: established titles hold the list.
- At $24.99 its median price beats 84% of Books categories, leaving more margin per copy.
Top 10 Research best sellers
-
The Immortal Life of Henrietta Lacks
- List rank#1
- Price$9.92
- Rating4.6
- Reviews31,544
-
Stiff: The Curious Lives of Human Cadavers
by Mary Roach
- List rank#2
- Price$11.38
- Rating4.5
- Reviews9,287
-
The Body Electric: Electromagnetism And The Foundation Of Life
- List rank#3
- Price$12.98
- Rating4.6
- Reviews1,571
-
Estrogen Matters: Why Taking Hormones in Menopause Can Improve and Lengthen Women's Lives -- Without Raising the Risk of Breast Cancer
by Avrum Bluming
- List rank#4
- Price$21.99
- Rating4.7
- Reviews1,186
-
The Hunger Code: Resetting Your Body's Fat Thermostat in the Age of Ultra-Processed Food (Dr. Jason Fung Code, 6)
- List rank#5
- Price$20.98
- Rating4.7
- Reviews649
-
I Contain Multitudes: The Microbes Within Us and a Grander View of Life ― A Popular Science Look at Microbes and Life
by Ed Yong
- List rank#6
- Price$11.69
- Rating4.6
- Reviews4,261
-
The Salt Fix: Why the Experts Got It All Wrong--and How Eating More Might Save Your Life
by Dr. James DiNicolantonio
- List rank#7
- Price$15.72
- Rating4.6
- Reviews2,292
-
The Ultimate Peptide Protocols: A Beginner’s Guide to Weight Loss, Longevity, Healing and Recovery with 30-day Starter Plan
by Rod N. Silva MPS
- List rank#8
- Price$24.99
- Rating4.6
- Reviews229
-
Qualitative Research: A Guide to Design and Implementation
by Elizabeth J. Tisdell
- List rank#9
- Price$41.96
- Rating4.8
- Reviews40
-
The Complete Guide to Peptides: Unlocking the Secrets to Health, Healing, and Longevity
by Hack Smith
- List rank#10
- Price$29.99
- Rating4.7
- Reviews526
Same niche in Kindle eBooks: Research
FAQ
Is Research a good niche for Amazon KDP?
Its KDPTop opportunity score is 34/100, which makes it highly competitive. The median best seller has 49 reviews and sells for $24.99.
How many reviews do you need to rank in Research?
The median best seller has 49 reviews, and 61% of them have fewer than 100.
What do Research best sellers cost?
The median price is $24.99; half of the best sellers are priced between $15.99 and $46.51.
Can new books break into Research?
4% 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.