KDP categories · Top KDP authors
Water (Earth Science, Books): Amazon KDP category data
Amazon Books Best Sellers data for Water (Earth Science, Books), updated Nov 2, 2026: median price $12.90, median 2 reviews, average rating 4.4 and a KDPTop opportunity score of 20/100 (highly competitive).
| Price range (middle 50%) | $9.99 – $18.93 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 0% |
| Books on the list | 80 |
| Store | Books |
What stands out
- Its median reviews are 6% of the parent category Earth Science (27), one of the easier corners under it.
- Only 0% of its best sellers are under 90 days old, fewer than in 99% of Books categories: established titles hold the list.
- Its review barrier is lower than in 96% of Books categories: the median best seller has only 2 reviews, so new books can chart with few.
Top 10 Water best sellers
-
Harvesting Rainwater for Your Home: Design, Install, and Maintain a Self-Sufficient Water Collection and Storage System in 5 Simple Steps for DIY ... environmentalists (Simple Sustainable Living)
by Daniel I Stein
- List rank#1
- Price$15.97
- Rating4.4
- Reviews125
-
The Prepper's Water Survival Handbook: Easy to Follow Steps to Find, Filter, Purify and Store Water for Long Term Readiness, Self Reliance and Emergency Preparedness (Self Reliance Essentials)
- List rank#2
- Price$25.97
- Rating4.8
- Reviews194
-
The Secret Jobs of Ocean Creatures for Tweens and Teens: An Illustrated Marine Biology Encyclopedia of Extreme Adaptations, Ocean Ecosystems, and the Hidden Roles Sea Animals Play
by ROWAN MARLOWE
- List rank#3
- Price$15.88
- Rating5.0
- Reviews1
-
Tracking Trash: Flotsam, Jetsam, and the Science of Ocean Motion – How Spilled Cargo Helps Protect Marine Creatures for Children (Ages 10-12)
by Loree Griffin Burns
- List rank#4
- Price$11.99
- Rating4.6
- Reviews85
-
Blue Giant
by Katie Cottle
- List rank#5
- Price$7.99
- Rating4.7
- Reviews48
-
Composition Notebook: Cute Pink Coquette Bows and Vintage Ocean Creatures | College Ruled For School and Work| 110 Pages 7.5 x 9.25" | Aesthetic School Supplies For Biology Students and Teachers
by Own It Designs
- List rank#6
- Price$7.75
- Rating4.6
- Reviews56
-
The Carbon Cycle: Track the Path of Life's Essential Element (Inquire & Investigate)
by Carla Mooney
- List rank#7
- Price$24.22
- Reviews-
-
The Hydrologic Cycle Explained | Water Cycle Books for Kids Grade 5 | Children's Science Education Books
- List rank#8
- Price$4.99
- Rating5.0
- Reviews2
-
Plasticus Maritimus: An Invasive Species (David Suzuki Institute)
by Ana Pego
- List rank#9
- Price$11.56
- Rating4.7
- Reviews23
-
I know all about the weather: The great journey of air and water
by Frederick Jany
- List rank#10
- Price$11.68
- Reviews-
FAQ
Is Water a good niche for Amazon KDP?
Its KDPTop opportunity score is 20/100, which makes it highly competitive. The median best seller has 2 reviews and sells for $12.90.
How many reviews do you need to rank in Water?
The median best seller has 2 reviews, and 90% of them have fewer than 100.
What do Water best sellers cost?
The median price is $12.90; half of the best sellers are priced between $9.99 and $18.93.
Can new books break into Water?
0% 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.