KDP categories · Top KDP authors
Geophysics (Earth Sciences, Books): Amazon KDP category data
Amazon Books Best Sellers data for Geophysics (Earth Sciences, Books), updated Nov 3, 2026: median price $33.95, median 16 reviews, average rating 4.5 and a KDPTop opportunity score of 29/100 (highly competitive).
| Price range (middle 50%) | $17.08 – $87.45 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 7% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 1% of the parent category Earth Sciences (1,495), one of the easier corners under it.
- At $33.95 its median price beats 91% of Books categories, leaving more margin per copy.
- Its review barrier is lower than in 76% of Books categories: the median best seller has only 16 reviews, so new books can chart with few.
Top 10 Geophysics 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
-
Washington and Oregon Rocks and Minerals Field Guide | Waterproof
by Rock Chasing
- List rank#3
- Price$29.95
- Rating4.8
- Reviews16
-
Scientific American June 2026
- List rank#4
- Price$6.99
- Rating4.4
- Reviews42
-
Scientific American November 2026
- List rank#5
- Price$6.99
- Reviews-
-
Physics Essentials For Dummies
by Steven Holzner
- List rank#6
- Price$9
- Rating4.5
- Reviews682
-
Virginia and West Virginia Rocks And Minerals Field Guide | Find And Identify Rocks, Minerals, Crystals, and Gemstones | Rock Chasing
by Rock Chasing
- List rank#7
- Price$29.95
- Rating4.8
- Reviews35
-
California Rocks And Minerals Identification Field Guide | Waterproof | Easily Find And Identify California Crystals, Rocks, Minerals, and Gems | Ideal for Rockhounds, Hikers, Beginners & Kids
by Rock Chasing
- List rank#8
- Price$29.95
- Rating4.7
- Reviews111
-
New Jersey, Maryland, and Delaware Rocks and Minerals Field Guide
by Rock Chasing
- List rank#9
- Price$29.95
- Rating4.9
- Reviews22
-
The Blue Machine: How the Ocean Works
by Helen Czerski
- List rank#10
- Price$17.69
- Rating4.6
- Reviews963
Same niche in Kindle eBooks: Geophysics
FAQ
Is Geophysics a good niche for Amazon KDP?
Its KDPTop opportunity score is 29/100, which makes it highly competitive. The median best seller has 16 reviews and sells for $33.95.
How many reviews do you need to rank in Geophysics?
The median best seller has 16 reviews, and 85% of them have fewer than 100.
What do Geophysics best sellers cost?
The median price is $33.95; half of the best sellers are priced between $17.08 and $87.45.
Can new books break into Geophysics?
7% 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.