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Seashells (Oceans & Seas, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Seashells (Oceans & Seas, Kindle eBooks), updated Nov 2, 2026: median price $6.99, median 12 reviews, average rating 4.4 and a KDPTop opportunity score of 20/100 (highly competitive).
| Price range (middle 50%) | $2.99 – $9.99 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 3% |
| Books on the list | 97 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 5% of the parent category Oceans & Seas (224), one of the easier corners under it.
- Only 3% of its best sellers are under 90 days old, fewer than in 82% of Kindle eBooks categories: established titles hold the list.
- Its review barrier is lower than in 79% of Kindle eBooks categories: the median best seller has only 12 reviews, so new books can chart with few.
Top 10 Seashells best sellers
-
The Book of Shells: A Life-Size Guide to Identifying and Classifying Six Hundred Seashells
by M.G. Harasewych
- List rank#1
- Price$2.99
- Rating4.8
- Reviews158
-
Spirals in Time: The Secret Life and Curious Afterlife of Seashells
by Helen Scales
- List rank#2
- Price$14.99
- Rating4.5
- Reviews352
-
Florida's Seashells: A Beachcomber's Guide
by Blair Witherington
- List rank#3
- Price$8.99
- Rating4.8
- Reviews1,608
-
Sanibel & Longboat Key Shell Hunter's Field Guide: Where, When and How to find great shells on Sanibel, Captiva & Longboat Key Wind + waves + tides + beach reading + species behavior
by Stephen Wilkinson
- List rank#4
- Price$6.99
- Reviews-
-
-
Seashells of North America: A Guide to Field Identification (Golden Guides from St. Martin's Press)
by R. Tucker Abbott
- List rank#6
- Price$2.99
- Rating4.6
- Reviews53
-
The Complete Collector's Guide to Shells & Shelling: Seashells for the Waters of the North American Atlantic and Pacific Oceans, Gulf of Mexico, Gulf of ... The Caribbean, The Bahamas, and Hawaii
by Sandra Romashko
- List rank#7
- Price$8.99
- Reviews-
-
The Beachcomber's Companion: An Illustrated Guide to Collecting and Identifying Beach Treasures
by Anna Marlis Burgard
- List rank#8
- Price$11.99
- Rating4.7
- Reviews638
-
Clam Down: A Metamorphosis
by Anelise Chen
- List rank#9
- Price$14.99
- Rating4.0
- Reviews51
-
Seashells: A Compendium of Five Thousand of the World's Species
by Paul Callomon
- List rank#10
- Price$42.33
- Rating4.1
- Reviews12
Same niche in Books: Seashells
FAQ
Is Seashells a good niche for Amazon KDP?
Its KDPTop opportunity score is 20/100, which makes it highly competitive. The median best seller has 12 reviews and sells for $6.99.
How many reviews do you need to rank in Seashells?
The median best seller has 12 reviews, and 90% of them have fewer than 100.
What do Seashells best sellers cost?
The median price is $6.99; half of the best sellers are priced between $2.99 and $9.99.
Can new books break into Seashells?
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.