KDP categories · Top KDP authors
Reference (Outdoors & Nature, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Reference (Outdoors & Nature, Kindle eBooks), updated Nov 3, 2026: median price $8.99, median 115 reviews, average rating 4.5 and a KDPTop opportunity score of 26/100 (highly competitive).
| Price range (middle 50%) | $2.99 – $11.12 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 8% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 9% of the parent category Outdoors & Nature (1,322), one of the easier corners under it.
- Prices spread wide: the middle half runs from $2.99 to $11.12, so budget editions and premium or boxed sets sell side by side.
Top 10 Reference best sellers
-
The Complete Guide to Edible Wild Plants
by Department of The Army
- List rank#1
- Price$8.99
- Rating4.4
- Reviews3,530
-
Tao Te Ching: A Study of Taoist Philosophy and the Way of Balance (Perennial Classics)
- List rank#2
- Price$14.99
- Rating4.6
- Reviews1,589
-
Raising Your Spirited Child: A Guide for Parents Whose Child Is More Intense, Sensitive, Perceptive, Persistent, and Energetic – A Bestselling Updated Edition (Spirited Series Book 6)
by Mary Sheedy Kurcinka
- List rank#3
- Price$1.99
- Rating4.2
- Reviews33
-
The Longevity Paradox: How to Die Young at a Ripe Old Age (The Plant Paradox Book 4)
- List rank#4
- Price$9.99
- Rating4.5
- Reviews4,995
-
Peterson Reference Guide to Gulls of the Americas (Peterson Reference Guides)
by Steven N.G. Howell
- List rank#5
- Price$3.99
- Rating4.8
- Reviews50
-
The Dancing Wu Li Masters: An Enlightening Exploration of Quantum Physics, Eastern Philosophy, and the Interplay of Science and Spirituality
by Gary Zukav
- List rank#6
- Price$9.99
- Rating4.5
- Reviews1,209
-
An Ocean of Air: Why the Wind Blows and Other Mysteries of the Atmosphere
by Gabrielle Walker
- List rank#7
- Price$1.99
- Rating4.5
- Reviews238
-
Weather 101: From Doppler Radar and Long-Range Forecasts to the Polar Vortex and Climate Change, Everything You Need to Know about the Study of Weather (Adams 101 Series)
by Kathleen Sears
- List rank#8
- Price$2.99
- Rating4.4
- Reviews130
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Science in Seconds: 200 Key Concepts Explained in an Instant (IN MINUTES)
by Hazel Muir
- List rank#10
- Price$3.99
- Rating4.5
- Reviews143
FAQ
Is Reference a good niche for Amazon KDP?
Its KDPTop opportunity score is 26/100, which makes it highly competitive. The median best seller has 115 reviews and sells for $8.99.
How many reviews do you need to rank in Reference?
The median best seller has 115 reviews, and 45% of them have fewer than 100.
What do Reference best sellers cost?
The median price is $8.99; half of the best sellers are priced between $2.99 and $11.12.
Can new books break into Reference?
8% 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.