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Research & Theory (Medical Books › Nursing, Books): Amazon KDP category data
Amazon Books Best Sellers data for Research & Theory (Medical Books › Nursing, Books), updated Nov 3, 2026: median price $60.51, median 42 reviews, average rating 4.6 and a KDPTop opportunity score of 34/100 (highly competitive).
| Price range (middle 50%) | $43.25 – $82.17 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 7% |
| Books on the list | 99 |
| Store | Books |
What stands out
- Its median reviews are 12% of the parent category Nursing (358), one of the easier corners under it.
- At $60.51 its median price beats 97% of Books categories, leaving more margin per copy.
Top 10 Research & Theory best sellers
-
Evidence-Based Practice in Nursing & Healthcare: A Guide to Best Practice
by Bernadette Mazurek Melnyk PhD RN CPNP/PMHNP FNAP
- List rank#1
- Price$91.19
- Rating4.4
- Reviews192
-
Polit & Beck's Essentials of Nursing Research
by Dr. JANE M. FLANAGAN Ph.D.
- List rank#2
- Price$102
- Rating5.0
- Reviews3
-
Med Surg Certification Exam Prep: The Complete and Fully Updated Study Guide to Master the ANCC MEDSURG-BC™ Exam – With Full-Length Practice Tests, Step-by-Step Explanations, and Expert Strategies
by Skillful Prep Press
- List rank#3
- Price$29.90
- Rating5.0
- Reviews246
-
Polit & Beck's Nursing Research: Generating and Assessing Evidence for Nursing Practice
by Dr. JANE M. FLANAGAN Ph.D.
- List rank#4
- Price$119
- Rating4.5
- Reviews30
-
Knowledge Development in Nursing: Theory and Process
by Peggy L. Chinn PhD RN FAAN
- List rank#5
- Price$91.39
- Rating4.7
- Reviews5
-
Theoretical Basis for Nursing
by Melanie McEwan
- List rank#6
- Price$91.19
- Rating4.6
- Reviews143
-
Critical Care Made Easy: A Simplified Critical Care Guide for Nursing Students and Healthcare Providers: Quick and Effective Memorization Through Rhymes (Meds Made Easy)
by Callie Parker
- List rank#7
- Price$10.81
- Rating2.5
- Reviews2
-
Edelman's Health Promotion Throughout the Life Span
by Elizabeth Connelly Kudzma DNSc MPH WHNP-BC CNL
- List rank#8
- Price$92.31
- Rating4.4
- Reviews6
-
Nursing: The Philosophy and Science of Caring
by Jean Watson
- List rank#9
- Price$22.43
- Rating4.6
- Reviews209
-
Teaching in Nursing: A Guide for Faculty (Evolve)
by Diane M. Billings EdD RN ANEF FAAN
- List rank#10
- Price$99.97
- Rating4.7
- Reviews72
Same niche in Kindle eBooks: Research & Theory
FAQ
Is Research & Theory a good niche for Amazon KDP?
Its KDPTop opportunity score is 34/100, which makes it highly competitive. The median best seller has 42 reviews and sells for $60.51.
How many reviews do you need to rank in Research & Theory?
The median best seller has 42 reviews, and 73% of them have fewer than 100.
What do Research & Theory best sellers cost?
The median price is $60.51; half of the best sellers are priced between $43.25 and $82.17.
Can new books break into Research & Theory?
7% 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.