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Biological & Chemical (Weapons & Warfare, Books): Amazon KDP category data
Amazon Books Best Sellers data for Biological & Chemical (Weapons & Warfare, Books), updated Nov 2, 2026: median price $17.60, median 42 reviews, average rating 4.5 and a KDPTop opportunity score of 26/100 (highly competitive).
| Price range (middle 50%) | $12.60 – $25 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 4% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 5% of the parent category Weapons & Warfare (890), one of the easier corners under it.
- Only 4% of its best sellers are under 90 days old, fewer than in 82% of Books categories: established titles hold the list.
Top 10 Biological & Chemical best sellers
-
The Pentagon's Brain: An Uncensored History of DARPA, America's Top-Secret Military Research Agency
- List rank#1
- Price$29.95
- Rating4.5
- Reviews2,379
-
Armageddon: The Battle for Germany 1944-45
by Max Hastings
- List rank#2
- Price$24.99
- Rating4.6
- Reviews2,207
-
U.S. Army Special Forces Guide to Unconventional Warfare: Devices and Techniques for Incendiaries
by U.S. Department of the Army
- List rank#3
- Price$12.07
- Rating4.6
- Reviews2,159
-
The Bomber Mafia: A Dream, a Temptation, and the Longest Night of the Second World War
- List rank#4
- Price$9.90
- Rating4.5
- Reviews11,086
-
The Demon in the Freezer: A True Story
- List rank#5
- Price$12.99
- Rating4.5
- Reviews2,628
-
U.S. Armed Forces Nuclear, Biological And Chemical Survival Manual
by Dick Couch
- List rank#6
- Price$9.43
- Rating4.6
- Reviews1,190
-
The Alchemy of Air: A Jewish Genius, a Doomed Tycoon, and the Scientific Discovery That Fed the World but Fueled the Rise of Hitler
by Thomas Hager
- List rank#7
- Price$16.44
- Rating4.6
- Reviews1,074
-
The Great Halifax Explosion: A World War I Story of Treachery, Tragedy, and Extraordinary Heroism
- List rank#8
- Price$17.39
- Rating4.5
- Reviews1,921
-
The Dead Hand: The Untold Story of the Cold War Arms Race and its Dangerous Legacy
by David Hoffman
- List rank#9
- Price$21.59
- Rating4.5
- Reviews801
-
Bitten: The Secret History of Lyme Disease and Biological Weapons
by Kris Newby
- List rank#10
- Price$12.91
- Rating4.7
- Reviews1,267
Same niche in Kindle eBooks: Biological & Chemical
FAQ
Is Biological & Chemical a good niche for Amazon KDP?
Its KDPTop opportunity score is 26/100, which makes it highly competitive. The median best seller has 42 reviews and sells for $17.60.
How many reviews do you need to rank in Biological & Chemical?
The median best seller has 42 reviews, and 63% of them have fewer than 100.
What do Biological & Chemical best sellers cost?
The median price is $17.60; half of the best sellers are priced between $12.60 and $25.
Can new books break into Biological & Chemical?
4% 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.