KDP categories · Top KDP authors
Heavy Machinery (Science, Nature & How It Works, Books): Amazon KDP category data
Amazon Books Best Sellers data for Heavy Machinery (Science, Nature & How It Works, Books), updated Nov 2, 2026: median price $8.16, median 234 reviews, average rating 4.7 and a KDPTop opportunity score of 25/100 (highly competitive).
| Price range (middle 50%) | $6.39 – $10.99 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 3% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 9% of the parent category Science, Nature & How It Works (2,587), one of the easier corners under it.
- At $8.16 its median price is below 95% of Books categories, so it is a volume game.
- Only 3% of its best sellers are under 90 days old, fewer than in 88% of Books categories: established titles hold the list.
Top 10 Heavy Machinery best sellers
-
Wind-up Digger: A Toy and Book Gift Featuring a Hands-On Exploration Of Diggers And Construction Sites
by Sarah Hull
- List rank#1
- Price$11.69
- Rating4.7
- Reviews248
-
Construction Site Preschool Activity Book: Fun Learning with Trucks, Tools, and Mighty Machines
by Liv Wan
- List rank#2
- Price$11.99
- Rating4.9
- Reviews374
-
Build Your Own Monster Trucks Sticker Book: Complete 11 Awesome Trucks with 100+ Stickers and Statistics for Kids (Ages 5-8) (Build Your Own Sticker Book)
- List rank#3
- Price$8
- Rating4.8
- Reviews1,375
-
Wind-Up Santa's Sleigh: A Toy and Book Gift Featuring a Christmas Journey with Santa and His Sleigh
by Fiona Watt
- List rank#4
- Price$25.15
- Rating4.5
- Reviews138
-
Wind-up Train: A Toy and Book Combo with a Steam Train Adventure Through Cities, Mountains, and Rivers, and a Visit to a Train Museum
by Fiona Watt
- List rank#5
- Price$18.45
- Rating4.5
- Reviews877
-
Build your own Cars Sticker book: Build And Customize your own Supercars in this Interactive Sticker Book
- List rank#6
- Price$6.06
- Rating4.8
- Reviews932
-
Peek Inside How a Plane Works: A Fascinating Lift-the-Flap Book About Cockpits, Engines, and Wings for Children (Ages 3-5)
by Lara Bryan
- List rank#7
- Price$10.40
- Rating4.8
- Reviews585
-
-
Peek-a-Flap Dig! - Construction Lift-a-Flap Board Book for Babies and Toddlers; Ages 2-7
by Jaye Garnett
- List rank#9
- Price$6.39
- Rating4.8
- Reviews2,124
-
Little First Stickers Diggers and Cranes: An Entertaining Sticker Activity Book About Construction for Children (Ages 3-5)
by Hannah Watson
- List rank#10
- Price$5.99
- Rating4.8
- Reviews89
Same niche in Kindle eBooks: Heavy Machinery
FAQ
Is Heavy Machinery a good niche for Amazon KDP?
Its KDPTop opportunity score is 25/100, which makes it highly competitive. The median best seller has 234 reviews and sells for $8.16.
How many reviews do you need to rank in Heavy Machinery?
The median best seller has 234 reviews, and 35% of them have fewer than 100.
What do Heavy Machinery best sellers cost?
The median price is $8.16; half of the best sellers are priced between $6.39 and $10.99.
Can new books break into Heavy Machinery?
3% 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.