KDP categories · Top KDP authors
Testing (Materials & Material Science, Books): Amazon KDP category data
Amazon Books Best Sellers data for Testing (Materials & Material Science, Books), updated Nov 2, 2026: median price $101, median 2 reviews, average rating 4.6 and a KDPTop opportunity score of 26/100 (highly competitive).
| Price range (middle 50%) | $59.38 – $151 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 10% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 4% of the parent category Materials & Material Science (59), one of the easier corners under it.
- At $101 its median price beats 99% of Books categories, leaving more margin per copy.
- Its review barrier is lower than in 94% of Books categories: the median best seller has only 2 reviews, so new books can chart with few.
Top 10 Testing best sellers
-
2023 Aviation Maintenance Technician Handbook – General: FAA-H-8083-30B (Black & White)
by Federal Aviation Administration
- List rank#1
- Price$29.99
- Rating4.5
- Reviews52
-
The New Science of Strong Materials: Or Why You Don't Fall through the Floor (Princeton Science Library)
by James Edward Gordon
- List rank#2
- Price$12.96
- Rating4.7
- Reviews67
-
2023 Aviation Maintenance Technician Handbook – Airframe (Volume 2/2): FAA-H-8083-31B (Color Print)
by Federal Aviation Administration
- List rank#3
- Price$39.79
- Rating4.8
- Reviews25
-
Schaum’s Outline of Fluid Mechanics and Hydraulics, 4th Edition
by Cheng Liu
- List rank#4
- Price-
- Rating4.6
- Reviews69
-
Image Correlation for Shape, Motion and Deformation Measurements: Basic Concepts,Theory and Applications
by Michael A. Sutton
- List rank#5
- Price$233
- Rating5.0
- Reviews2
-
FE Civil Exam Success: Fundamentals of Engineering Exam Prep: All 14 Domains, EIT Practice Problems, Detailed Solutions, Full-Length Tests & Digital Flashcards
- List rank#6
- Price$43.11
- Rating4.7
- Reviews111
-
Forensic Materials Engineering: Case Studies
by Peter Rhys Lewis
- List rank#7
- Price$125
- Rating4.5
- Reviews4
-
Fracture Mechanics: Fundamentals and Applications, Fourth Edition
by Ted L. Anderson
- List rank#8
- Price$124
- Rating4.2
- Reviews39
-
FE Mechanical Exam Prep: The Complete Study Guide to Pass the Current Exam in 2 weeks | 2000+ FE-Aligned Practice Problems, and 5 Comprehensive Full Length Tests
by Thorne Sterling
- List rank#9
- Price$36.55
- Rating3.6
- Reviews188
-
Mechanics of Materials For Dummies
by James H. Allen III
- List rank#10
- Price$20.16
- Rating4.5
- Reviews272
FAQ
Is Testing a good niche for Amazon KDP?
Its KDPTop opportunity score is 26/100, which makes it highly competitive. The median best seller has 2 reviews and sells for $101.
How many reviews do you need to rank in Testing?
The median best seller has 2 reviews, and 95% of them have fewer than 100.
What do Testing best sellers cost?
The median price is $101; half of the best sellers are priced between $59.38 and $151.
Can new books break into Testing?
10% 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.