KDP categories · Top KDP authors
Structural (Geology, Books): Amazon KDP category data
Amazon Books Best Sellers data for Structural (Geology, Books), updated Nov 2, 2026: median price $55.97, median 1 reviews, average rating 4.3 and a KDPTop opportunity score of 23/100 (highly competitive).
| Price range (middle 50%) | $24.31 – $95.11 |
|---|---|
| Average rating | 4.3 |
| New releases (90 days) | 3% |
| Books on the list | 67 |
| Store | Books |
What stands out
- Its median reviews are 0% of the parent category Geology (307), one of the easier corners under it.
- Its review barrier is lower than in 99% of Books categories: the median best seller has only 1 reviews, so new books can chart with few.
- At $55.97 its median price beats 97% of Books categories, leaving more margin per copy.
Top 10 Structural best sellers
-
Earth Structure: An Introduction to Structural Geology and Tectonics
by Ben A. van der Pluijm
- List rank#1
- Price$149
- Rating4.3
- Reviews42
-
An Outline of Structural Geology
by Bruce E. Hobbs
- List rank#2
- Price$101
- Rating4.2
- Reviews11
-
The Appalachian Fold and Thrust Belt of Southern New England: Tectonic Petrology of Massachusetts
by Mr. William A. Szary M.S.
- List rank#3
- Price$21.99
- Reviews-
-
The Appalachian Fold and Thrust Belt of Northern New England: Tectonic Petrology of Vermont and New Hampshire
by Mr. William A. Szary M.S.
- List rank#4
- Price$24.95
- Rating5.0
- Reviews1
-
The Appalachian Fold and Thrust Belt: Tectonic Petrology of New York
by Mr. William A. Szary M.S.
- List rank#5
- Price$33.12
- Reviews-
-
Structural Geology of Rocks and Regions
by George H. Davis
- List rank#6
- Price$84.97
- Rating4.5
- Reviews76
-
Structural Geology
by Haakon Fossen
- List rank#7
- Price$61.29
- Rating4.5
- Reviews193
-
Geology, One Layer at a Time: A Beginner’s Guide to Reading Earth’s History Through Original Diagrams and Worked Cases
by Elinor Thorneby
- List rank#8
- Price$11.99
- Reviews-
-
Structural Geology of Rocks and Regions
by Stephen J. Davis, George H.; Reynolds
- List rank#9
- Price$152
- Rating4.4
- Reviews33
-
Basic Methods of Structural Geology
by Stephen Marshak
- List rank#10
- Price$120
- Rating4.0
- Reviews64
FAQ
Is Structural a good niche for Amazon KDP?
Its KDPTop opportunity score is 23/100, which makes it highly competitive. The median best seller has 1 reviews and sells for $55.97.
How many reviews do you need to rank in Structural?
The median best seller has 1 reviews, and 97% of them have fewer than 100.
What do Structural best sellers cost?
The median price is $55.97; half of the best sellers are priced between $24.31 and $95.11.
Can new books break into Structural?
3% 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.