KDP categories · Top KDP authors
Instruments & Supplies (Reference, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Instruments & Supplies (Reference, Kindle eBooks), updated Nov 2, 2026: median price $9.99, median 4 reviews, average rating 4.4 and a KDPTop opportunity score of 22/100 (highly competitive).
| Price range (middle 50%) | $7.99 – $48.43 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 8% |
| Books on the list | 99 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 7% of the parent category Reference (59), one of the easier corners under it.
- Its review barrier is lower than in 90% of Kindle eBooks categories: the median best seller has only 4 reviews, so new books can chart with few.
- Prices spread wide: the middle half runs from $7.99 to $48.43, so budget editions and premium or boxed sets sell side by side.
Top 10 Instruments & Supplies best sellers
-
The Prepper's Survival Natural Medicine: The Handbook you need When There is no Doctor. With Essential Knowledge about Herbs and Plants to grow and use for Essential Oils and Natural Remedies
by John Wiseman
- List rank#1
- Price$1.99
- Rating4.7
- Reviews39
-
Sterile Processing Technician Certification Study Guide: CRCST Exam Prep - Complete Review, 600+ Practice Questions & Explained Answers, 3 Mock Exams, Illustrated
by Diane R Whitfield
- List rank#2
- Price$9.99
- Reviews-
-
MLS-MLT CLINICAL LABORATORY TEXTBOOK: Fully Illustrated Clinical Guide to Specimen Management, Laboratory Testing, Quality Control and Diagnostic Interpretation Across the Major Med Lab Disciplines
by Nathan Newtaker
- List rank#3
- Price$11.99
- Reviews-
-
AAPC CPC STUDY GUIDE 2026: Your step-by-step system for mastering medical coding with 1,500+ practice cases, 500 realistic cases, and workflow checklists for aspiring outpatient coders
by DR. ALEX PREP
- List rank#4
- Price$38.14
- Rating4.2
- Reviews22
-
Biomedical Equipment Technician - The Comprehensive Guide: Mastering the Essentials of Medical Device Technology and Maintenance (Vanguard Professions: Pioneers of the Modern World)
by VIRUTI SHIVAN
- List rank#5
- Price$9.99
- Rating3.9
- Reviews6
-
Anesthesia Equipment — Fundamentals and Applications: Translating Physics and Engineering Principles into Clinical Workstation, Airway, and Monitoring Proficiency
by Philip V. Weaver MD
- List rank#6
- Price$99.99
- Reviews-
-
Laser-Tissue Interactions: Fundamentals and Applications (Biological and Medical Physics, Biomedical Engineering)
by Markolf H. Niemz
- List rank#7
- Price$51.99
- Rating2.0
- Reviews1
-
Tissue Engineering Made Easy
by Farhana Akter
- List rank#8
- Price$47.36
- Rating5.0
- Reviews1
-
Colloidal Silver 101: Make & Use Safe, Powerful Natural Wide Spectrum Antibiotic in Topical & Oral Dosage to Heal, Prevent Pathogens, Inflammation, Wound & Skin Fungal Infections, & Restore Health
by Eli Zeke
- List rank#9
- Price$2.99
- Rating4.2
- Reviews12
-
Sterile Processing: A Comprehensive Guide : For Classroom and Certification Exam Preparation
by Michael Luciano
- List rank#10
- Price$4.99
- Rating3.8
- Reviews46
FAQ
Is Instruments & Supplies a good niche for Amazon KDP?
Its KDPTop opportunity score is 22/100, which makes it highly competitive. The median best seller has 4 reviews and sells for $9.99.
How many reviews do you need to rank in Instruments & Supplies?
The median best seller has 4 reviews, and 93% of them have fewer than 100.
What do Instruments & Supplies best sellers cost?
The median price is $9.99; half of the best sellers are priced between $7.99 and $48.43.
Can new books break into Instruments & Supplies?
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.