KDP categories · Top KDP authors
Machinery & Tools: Amazon KDP category data
Amazon Books Best Sellers data for Machinery & Tools, updated Nov 2, 2026: median price $19.95, median 1 reviews, average rating 4.5 and a KDPTop opportunity score of 23/100 (highly competitive).
| Price range (middle 50%) | $14.87 – $28.95 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 6% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 1% of the parent category Technology (109), one of the easier corners under it.
- Its review barrier is lower than in 99% of Books categories: the median best seller has only 1 reviews, so new books can chart with few.
Top 10 Machinery & Tools best sellers
-
The Way Things Work: Newly Revised Edition: The Ultimate Guide to How Things Work
- List rank#1
- Price$13.98
- Rating4.8
- Reviews2,837
-
Underground: An Illustrated Journey Through City Infrastructure and How Systems Work for Kids (Ages 8-12)
- List rank#2
- Price$11.49
- Rating4.6
- Reviews323
-
Girls Garage: How to Use Any Tool, Tackle Any Project, and Build the World You Want to See
by Emily Pilloton
- List rank#3
- Price$16.65
- Rating4.8
- Reviews447
-
Machines through the Ages: From Furnaces to Factories (Technology through the Ages)
by Michael Woods
- List rank#4
- Price$14.05
- Reviews-
-
The Fascinating Engineering Book for Kids: Fun Facts for Curious Minds and Young Engineers (Facts Trend)
by Dylan Austin
- List rank#5
- Price$3.99
- Rating4.5
- Reviews2
-
PoppyPedia: The Big Book of How Cars Work: Engines, Wheels, and the Machines That Move Us | Visually Explained (Young Explorer Series)
- List rank#6
- Price$14.97
- Rating4.8
- Reviews21
-
Engineering Disasters: Real Stories of Collapses, Breakdowns, and Horrible Blunders (Our Scary History)
by Kelly Roberts
- List rank#7
- Price$5.99
- Rating3.8
- Reviews3
-
Careers in Welding (Makerspace Careers)
by Mary-Lane Kamberg
- List rank#8
- Price$15.30
- Reviews-
-
The Everyday Workings of Machines: How machines work, from toasters and trains to hovercrafts and robots - Includes close-ups, cutaways, and cross sections!
by Steve Martin
- List rank#9
- Price$13.99
- Rating4.9
- Reviews54
-
Learn to repair Espresso coffee machines: Practical guide with essential knowledge
by Rocco Clemente
- List rank#10
- Price$5.99
- Rating3.1
- Reviews4
FAQ
Is Machinery & Tools a good niche for Amazon KDP?
Its KDPTop opportunity score is 23/100, which makes it highly competitive. The median best seller has 1 reviews and sells for $19.95.
How many reviews do you need to rank in Machinery & Tools?
The median best seller has 1 reviews, and 94% of them have fewer than 100.
What do Machinery & Tools best sellers cost?
The median price is $19.95; half of the best sellers are priced between $14.87 and $28.95.
Can new books break into Machinery & Tools?
6% 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.