KDP categories · Top KDP authors
Light (Physics, Books): Amazon KDP category data
Amazon Books Best Sellers data for Light (Physics, Books), updated Nov 3, 2026: median price $73.99, median 8 reviews, average rating 4.5 and a KDPTop opportunity score of 26/100 (highly competitive).
| Price range (middle 50%) | $37.48 – $128 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 6% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 0% of the parent category Physics (1,850), one of the easier corners under it.
- At $73.99 its median price beats 98% of Books categories, leaving more margin per copy.
- Its review barrier is lower than in 84% of Books categories: the median best seller has only 8 reviews, so new books can chart with few.
Top 10 Light best sellers
-
AFOQT Study Guide: Air Force Officer Qualifying Test Prep Book (2026-2027)
by Military Prep Academy
- List rank#1
- Price$22.78
- Rating4.6
- Reviews643
-
The Universal One: Walter Russell’s Foundational Mind-Centered Electromagnetic Universe Treatise—Exact Facsimile with Full Illustrations
by Walter Russell
- List rank#2
- Price$18.53
- Rating4.6
- Reviews97
-
Art & Physics: Parallel Visions in Space, Time, and Light – An Exhilarating History Tracing Breakthroughs from Monet to Einstein (P.S.)
by Leonard Shlain
- List rank#3
- Price$10
- Rating4.7
- Reviews247
-
Nonlinear Optics
by Robert W. Boyd
- List rank#4
- Price$68.97
- Rating4.7
- Reviews33
-
On the Origin of Everything: The Physical Model of Light, Matter, and Gravity
by William H Alsept
- List rank#5
- Price$18.99
- Reviews-
-
Understanding Physics (Motion, Sound, and Heat / Light, Magnetism, and Electricity / The Electron, Proton, and Neutron)
by Isaac Asimov
- List rank#6
- Price$39
- Rating4.7
- Reviews225
-
Building Electro-Optical Systems: Making It All Work (Wiley Series in Pure and Applied Optics)
by Philip C. D. Hobbs
- List rank#7
- Price$135
- Rating4.8
- Reviews19
-
MASTERING LASER CUTTING & ENGRAVING: Tips, Tricks, Material Guides, Troubleshooting, and Creative Projects for Beginners and Makers.
by Harry Benton
- List rank#8
- Price$18.99
- Rating5.0
- Reviews3
-
Electromagnetic Noise and Quantum Optical Measurements (Advanced Texts in Physics)
by Hermann A. Haus
- List rank#9
- Price$114
- Rating5.0
- Reviews4
-
Same niche in Kindle eBooks: Light
FAQ
Is Light a good niche for Amazon KDP?
Its KDPTop opportunity score is 26/100, which makes it highly competitive. The median best seller has 8 reviews and sells for $73.99.
How many reviews do you need to rank in Light?
The median best seller has 8 reviews, and 93% of them have fewer than 100.
What do Light best sellers cost?
The median price is $73.99; half of the best sellers are priced between $37.48 and $128.
Can new books break into Light?
6% 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.