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Quantum Theory (Physics, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Quantum Theory (Physics, Kindle eBooks), updated Nov 2, 2026: median price $6.99, median 124 reviews, average rating 4.4 and a KDPTop opportunity score of 23/100 (highly competitive).
| Price range (middle 50%) | $2.99 – $9.99 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 12% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 18% of the parent category Physics (682), one of the easier corners under it.
- Prices spread wide: the middle half runs from $2.99 to $9.99, so budget editions and premium or boxed sets sell side by side.
Top 10 Quantum Theory best sellers
-
Black Holes: The Key to Understanding the Universe
by Brian Cox
- List rank#1
- Price$1.99
- Rating4.6
- Reviews1,581
-
Six Impossible Things: The Mystery of the Quantum World
by John Gribbin
- List rank#2
- Price$11.99
- Rating4.4
- Reviews142
-
Waves in an Impossible Sea: How Everyday Life Emerges from the Cosmic Ocean
by Matt Strassler
- List rank#3
- Price$2.99
- Rating4.5
- Reviews436
-
Scientific American September 2026
- List rank#4
- Price$6.99
- Rating4.8
- Reviews13
-
-
Scientific American October 2026
- List rank#6
- Price$6.99
- Rating4.2
- Reviews7
-
Quantum Theory
by Max Planck
- List rank#7
- Price$0.99
- Rating4.5
- Reviews871
-
Scientific American June 2026
- List rank#8
- Price$6.99
- Rating4.4
- Reviews42
-
The Quantum Universe: (And Why Anything That Can Happen, Does)
by Brian Cox
- List rank#9
- Price$1.99
- Rating4.4
- Reviews1,351
-
The Allure of the Multiverse: Extra Dimensions, Other Worlds, and Parallel Universes
by Paul Halpern
- List rank#10
- Price$1.99
- Rating4.3
- Reviews109
Same niche in Books: Quantum Theory
FAQ
Is Quantum Theory a good niche for Amazon KDP?
Its KDPTop opportunity score is 23/100, which makes it highly competitive. The median best seller has 124 reviews and sells for $6.99.
How many reviews do you need to rank in Quantum Theory?
The median best seller has 124 reviews, and 44% of them have fewer than 100.
What do Quantum Theory best sellers cost?
The median price is $6.99; half of the best sellers are priced between $2.99 and $9.99.
Can new books break into Quantum Theory?
12% 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.