KDP categories · Top KDP authors
Reference (Medicine, Books): Amazon KDP category data
Amazon Books Best Sellers data for Reference (Medicine, Books), updated Nov 3, 2026: median price $23.71, median 323 reviews, average rating 4.6 and a KDPTop opportunity score of 36/100 (highly competitive).
| Price range (middle 50%) | $14.34 – $43.40 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 8% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 11% of the parent category Medicine (2,999), one of the easier corners under it.
- At $23.71 its median price beats 82% of Books categories, leaving more margin per copy.
- Its review barrier is higher than in 71% of Books categories: the median best seller has 323 reviews, so new books need time to build up.
Top 10 Reference best sellers
-
Where There Is No Doctor: A Village Health Care Handbook
by David Werner
- List rank#1
- Price$29.19
- Rating4.7
- Reviews2,028
-
The Ultimate Peptides Bible: A Complete Guide to Safe, Science-Backed Peptide Therapy for Weight Loss, Muscle Growth, Anti-Aging, Gut Health, Brain ... Ultimate Longevity and Biohacking Handbooks)
by Tom Ralston
- List rank#2
- Price$23.28
- Rating4.4
- Reviews946
-
Chicka Chicka 1, 2, 3
- List rank#3
- Price$6.38
- Rating4.7
- Reviews4,890
-
2026 Lippincott Pocket Drug Guide for Nurses
by REBECCA TUCKER
- List rank#4
- Price$25.99
- Rating4.5
- Reviews147
-
Medical Terminology: The Best and Most Effective Way to Memorize, Pronounce and Understand Medical Terms: Second Edition
by David Andersson
- List rank#5
- Price$14.29
- Rating4.6
- Reviews6,045
-
-
Anatomy Coloring Book, The
by Wynn Kapit
- List rank#7
- Price$17.38
- Rating4.6
- Reviews13,479
-
Medical Terminology: The Basics: a QuickStudy Laminated Reference Guide (Quick Study Academic)
- List rank#8
- Price$8.34
- Rating4.7
- Reviews10,269
-
Pocket Medicine
by MARC SABATINE
- List rank#9
- Price$62.37
- Rating4.6
- Reviews99
-
The Complete Fenbendazole & Ivermectin Protocols: A Step-by-Step Repurposed Drug Dosing Reference, Supplement Stacking, and 60-Day Integrative Cancer Support System for Patients and Caregivers
by LENNOX HARTWELL
- List rank#10
- Price$18.99
- Rating4.2
- Reviews23
Subcategories
FAQ
Is Reference a good niche for Amazon KDP?
Its KDPTop opportunity score is 36/100, which makes it highly competitive. The median best seller has 323 reviews and sells for $23.71.
How many reviews do you need to rank in Reference?
The median best seller has 323 reviews, and 29% of them have fewer than 100.
What do Reference best sellers cost?
The median price is $23.71; half of the best sellers are priced between $14.34 and $43.40.
Can new books break into Reference?
8% 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.