KDP categories · Top KDP authors
Research (Medical eBooks, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Research (Medical eBooks, Kindle eBooks), updated Nov 3, 2026: median price $9.99, median 28 reviews, average rating 4.6 and a KDPTop opportunity score of 24/100 (highly competitive).
| Price range (middle 50%) | $5.99 – $16.39 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 11% |
| Books on the list | 98 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 2% of the parent category Medical eBooks (1,412), one of the easier corners under it.
- Prices spread wide: the middle half runs from $5.99 to $16.39, so budget editions and premium or boxed sets sell side by side.
Top 10 Research best sellers
-
The Model Thinker: What You Need to Know to Make Data Work for You
- List rank#1
- Price$1.99
- Rating4.5
- Reviews574
-
The Immortal Life of Henrietta Lacks
- List rank#2
- Price$8.99
- Rating4.6
- Reviews31,544
-
Estrogen Matters: Why Taking Hormones in Menopause Can Improve Women's Well-Being and Lengthen Their Lives -- Without Raising the Risk of Breast Cancer (2024 Revised and Updated Edition)
by Carol Tavris
- List rank#3
- Price$14.99
- Rating4.7
- Reviews1,186
-
The Body Electric: Electromagnetism and the Foundation of Life
- List rank#4
- Price$12.99
- Rating4.6
- Reviews1,571
-
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#5
- Price$15.99
- Rating4.6
- Reviews4,261
-
The Professor and the Madman: A Tale of Murder, Insanity, and the Making of the Oxford English Dictionary — An OED History
- List rank#6
- Price$7.99
- Rating4.2
- Reviews3,898
-
The Lost Family: How DNA Testing Is Upending Who We Are
by Libby Copeland
- List rank#7
- Price$9.99
- Rating4.4
- Reviews820
-
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$12.99
- Rating4.6
- Reviews229
-
Forget Me Not: The #1 Alzheimer's and Dementia Guide for Professional and Family Caregivers
by Debra Kostiw
- List rank#9
- Price$3.99
- Rating4.7
- Reviews583
-
Tweak: Growing Up on Methamphetamines
by Nic Sheff
- List rank#10
- Price$11.99
- Rating4.6
- Reviews5,021
Same niche in Books: Research
FAQ
Is Research a good niche for Amazon KDP?
Its KDPTop opportunity score is 24/100, which makes it highly competitive. The median best seller has 28 reviews and sells for $9.99.
How many reviews do you need to rank in Research?
The median best seller has 28 reviews, and 67% of them have fewer than 100.
What do Research best sellers cost?
The median price is $9.99; half of the best sellers are priced between $5.99 and $16.39.
Can new books break into Research?
11% 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.