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Siblings (Family, Books): Amazon KDP category data
Amazon Books Best Sellers data for Siblings (Family, Books), updated Nov 2, 2026: median price $9.25, median 2,103 reviews, average rating 4.5 and a KDPTop opportunity score of 22/100 (highly competitive).
| Price range (middle 50%) | $7.95 – $11.49 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 7% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its review barrier is higher than in 92% of Books categories: the median best seller has 2,103 reviews, so new books need time to build up.
- At $9.25 its median price is below 93% of Books categories, so it is a volume game.
- Its median reviews are 36% of the parent category Family (5,782), one of the easier corners under it.
Top 10 Siblings best sellers
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-
The Cruel Prince (The Folk of the Air Book 1)
by Holly Black
- List rank#2
- Price$11.99
- Rating4.3
- Reviews75,859
-
The Thorn Queen (The Rose Bargain Book 2)
- List rank#3
- Price$2.99
- Rating4.1
- Reviews2,147
-
Caraval
- List rank#4
- Price$9.99
- Rating4.3
- Reviews36,785
-
21 Days of Fear: One Day, One Letter
by Hervé Commère
- List rank#5
- Price$15.48
- Rating4.0
- Reviews264
-
Legendary: A Caraval Novel
- List rank#6
- Price$9.99
- Rating4.4
- Reviews19,640
-
Finale: A Caraval Novel
- List rank#7
- Price$9.99
- Rating4.4
- Reviews20,294
-
We'll Always Have Summer (Summer I Turned Pretty Book 3)
by Jenny Han
- List rank#8
- Price$9.99
- Rating4.4
- Reviews49,212
-
Long Way Down
- List rank#9
- Price$6.79
- Rating4.6
- Reviews8,337
-
The Brothers Hawthorne (The Inheritance Games, 4)
- List rank#10
- Price$8.93
- Rating4.3
- Reviews11,653
FAQ
Is Siblings a good niche for Amazon KDP?
Its KDPTop opportunity score is 22/100, which makes it highly competitive. The median best seller has 2,103 reviews and sells for $9.25.
How many reviews do you need to rank in Siblings?
The median best seller has 2,103 reviews, and 4% of them have fewer than 100.
What do Siblings best sellers cost?
The median price is $9.25; half of the best sellers are priced between $7.95 and $11.49.
Can new books break into Siblings?
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.