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Bacteriology (Agricultural Sciences, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Bacteriology (Agricultural Sciences, Kindle eBooks), updated Nov 3, 2026: median price $9.99, median 8 reviews, average rating 4.5 and a KDPTop opportunity score of 19/100 (highly competitive).
| Price range (middle 50%) | $6.99 – $36.00 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 5% |
| Books on the list | 78 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 2% of the parent category Agricultural Sciences (300), one of the easier corners under it.
- Its review barrier is lower than in 84% of Kindle eBooks categories: the median best seller has only 8 reviews, so new books can chart with few.
- Prices spread wide: the middle half runs from $6.99 to $36.00, so budget editions and premium or boxed sets sell side by side.
Top 10 Bacteriology best sellers
-
Scientific American September 2026
- List rank#1
- Price$6.99
- Rating4.8
- Reviews13
-
Scientific American October 2026
- List rank#2
- Price$6.99
- Rating4.2
- Reviews7
-
Scientific American June 2026
- List rank#3
- Price$6.99
- Rating4.4
- Reviews42
-
Scientific American November 2026
- List rank#4
- Price$6.99
- Reviews-
-
Scientific American May 2026
- List rank#5
- Price$6.99
- Rating4.0
- Reviews1
-
Scientific American 14th April 2026
- List rank#6
- Price$6.99
- Rating4.5
- Reviews11
-
Spillover: Animal Infections and the Next Human Pandemic
- List rank#7
- Price$9.99
- Rating4.7
- Reviews4,924
-
Scientific American April 2026
- List rank#8
- Price$6.99
- Rating5.0
- Reviews3
-
Evolution: A View from the 21st Century. Fortified.
by James A. Shapiro
- List rank#9
- Price$9.99
- Rating4.5
- Reviews48
-
So Very Small: How Humans Discovered the Microcosmos, Defeated Germs--and May Still Lose the War Against Infectious Disease
by Thomas Levenson
- List rank#10
- Price$13.99
- Rating4.6
- Reviews87
Same niche in Books: Bacteriology
FAQ
Is Bacteriology a good niche for Amazon KDP?
Its KDPTop opportunity score is 19/100, which makes it highly competitive. The median best seller has 8 reviews and sells for $9.99.
How many reviews do you need to rank in Bacteriology?
The median best seller has 8 reviews, and 87% of them have fewer than 100.
What do Bacteriology best sellers cost?
The median price is $9.99; half of the best sellers are priced between $6.99 and $36.00.
Can new books break into Bacteriology?
5% 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.