KDP categories · Top KDP authors
Machinery (Mechanical, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Machinery (Mechanical, Kindle eBooks), updated Nov 2, 2026: median price $9.39, median 3 reviews, average rating 4.5 and a KDPTop opportunity score of 32/100 (highly competitive).
| Price range (middle 50%) | $4.84 – $12.12 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 30% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 9% of the parent category Mechanical (34), one of the easier corners under it.
- 30% of its best sellers came out in the last 90 days, more than in 95% of Kindle eBooks categories: readers here keep buying new titles.
- Its review barrier is lower than in 92% of Kindle eBooks categories: the median best seller has only 3 reviews, so new books can chart with few.
Top 10 Machinery best sellers
-
Basic Machines and How They Work
by Naval Education
- List rank#1
- Price$0.99
- Rating4.5
- Reviews1,055
-
Bambu Studio Complete User Guide for Beginners: Why Your Screen Never Matches the Tutorial, What Every Setting Does, and How to Fix Any Failed Print So Your 3D Printer Never Gathers Dust
by Hugo Trent
- List rank#2
- Price$9.99
- Rating4.6
- Reviews26
-
507 Mechanical Movements
by Henry T. Brown
- List rank#3
- Price$0.99
- Rating4.5
- Reviews1,608
-
Industrial Electrical Schematics for Beginners: Learn to Read Ladder Diagrams, Motor Control Circuits, Electrical Symbols, Wiring Diagrams, Control Panels, ... Real Industrial Drawings with step-by...
- List rank#4
- Price$7.99
- Rating4.2
- Reviews28
-
507 Mechanical Movements: Mechanisms and Devices (Dover Science Books)
by Henry T. Brown
- List rank#5
- Price$0.99
- Rating4.2
- Reviews1,227
-
Practical Mechanics For Inventors
by Pedro Portugal
- List rank#6
- Price$12.49
- Rating3.4
- Reviews3
-
How a Transmission Works for Beginners: Manual, Automatic, CVT and Drivetrain Systems Explained (Mechanical Systems for Beginners Book 8)
by Colin Chenard
- List rank#7
- Price$2.99
- Rating5.0
- Reviews1
-
PLC Ladder Logic for Beginners: Learn PLC Programming from Scratch with Ladder Logic, Practical Exercises, and Industrial Automation Concepts
- List rank#8
- Price$9.99
- Rating4.6
- Reviews21
-
HVAC Service & Refrigeration Technician Handbook: Installation, Troubleshooting, Repair, Maintenance, Refrigerant Charging & Field Diagnostics
by Md Arif Raza
- List rank#9
- Price$7
- Reviews-
-
John Deere's Company - Volume 2: From Johnny Popper to the Iron Horses 1928–1982 (John Deere Company History)
by Wayne Broehl
- List rank#10
- Price$9.99
- Rating4.6
- Reviews13
Same niche in Books: Machinery
FAQ
Is Machinery a good niche for Amazon KDP?
Its KDPTop opportunity score is 32/100, which makes it highly competitive. The median best seller has 3 reviews and sells for $9.39.
How many reviews do you need to rank in Machinery?
The median best seller has 3 reviews, and 82% of them have fewer than 100.
What do Machinery best sellers cost?
The median price is $9.39; half of the best sellers are priced between $4.84 and $12.12.
Can new books break into Machinery?
30% 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.