KDP categories · Top KDP authors
Physical & Theoretical (Chemistry, Books): Amazon KDP category data
Amazon Books Best Sellers data for Physical & Theoretical (Chemistry, Books), updated Nov 3, 2026: median price $29.22, median 52 reviews, average rating 4.6 and a KDPTop opportunity score of 34/100 (highly competitive).
| Price range (middle 50%) | $17.36 – $77.78 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 9% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 9% of the parent category Chemistry (564), one of the easier corners under it.
- At $29.22 its median price beats 88% of Books categories, leaving more margin per copy.
- Prices spread wide: the middle half runs from $17.36 to $77.78, so budget editions and premium or boxed sets sell side by side.
Top 10 Physical & Theoretical best sellers
-
Quantum Theory
by Max Planck
- List rank#1
- Price$0.99
- Rating4.5
- Reviews871
-
Scientific American September 2026
- List rank#2
- Price$6.99
- Rating4.8
- Reviews13
-
Scientific American October 2026
- List rank#3
- Price$6.99
- Rating4.2
- Reviews7
-
Quantum Physics for Beginners: From Wave Theory to Quantum Computing. Understanding How Everything Works by a Simplified Explanation of Quantum Physics and Mechanics Principles
by Carl J. Pratt
- List rank#4
- Price$15.95
- Rating4.4
- Reviews2,196
-
Scientific American June 2026
- List rank#5
- Price$6.99
- Rating4.4
- Reviews42
-
The Cartoon Guide to Chemistry: A Stanford Professor’s Humorous Graphic Guide to College-Level Science (Cartoon Guide Series, 10)
by Larry Gonick
- List rank#6
- Price$10.48
- Rating4.6
- Reviews724
-
Black Holes: The Key to Understanding the Universe ― A Definitive Popular Science Book from a Star Physicist
by Brian Cox
- List rank#7
- Price$13
- Rating4.6
- Reviews1,581
-
Scientific American November 2026
- List rank#8
- Price$6.99
- Reviews-
-
Chlorine Dioxide Protocols: An Evidence Based Reference to Preparation Methods, Safety Protocols, Water Treatment, Practical Applications, and Scientific Research
by Prof Rogo Varvi
- List rank#9
- Price$14.99
- Rating5.0
- Reviews2
-
Chemistry For Dummies
by John T. Moore
- List rank#10
- Price$26.99
- Rating4.1
- Reviews7
Subcategories
Same niche in Kindle eBooks: Physical & Theoretical
FAQ
Is Physical & Theoretical a good niche for Amazon KDP?
Its KDPTop opportunity score is 34/100, which makes it highly competitive. The median best seller has 52 reviews and sells for $29.22.
How many reviews do you need to rank in Physical & Theoretical?
The median best seller has 52 reviews, and 64% of them have fewer than 100.
What do Physical & Theoretical best sellers cost?
The median price is $29.22; half of the best sellers are priced between $17.36 and $77.78.
Can new books break into Physical & Theoretical?
9% 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.