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Siblings (Family Life, Books): Amazon KDP category data
Amazon Books Best Sellers data for Siblings (Family Life, Books), updated Nov 2, 2026: median price $8.50, median 2,490 reviews, average rating 4.7 and a KDPTop opportunity score of 20/100 (highly competitive).
| Price range (middle 50%) | $6.75 – $10.23 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 6% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its review barrier is higher than in 94% of Books categories: the median best seller has 2,490 reviews, so new books need time to build up.
- At $8.50 its median price is below 94% of Books categories, so it is a volume game.
- Its median reviews are 44% of the parent category Family Life (5,714), one of the easier corners under it.
Top 10 Siblings best sellers
-
Wildwood: A Fantastical Adventure and Basis for the LAIKA Film (Wildwood Chronicles, 1)
by Colin Meloy
- List rank#1
- Price$11.99
- Rating4.4
- Reviews1,386
-
Nap Trapped!
by Emily Vondy
- List rank#2
- Price$17.48
- Rating4.8
- Reviews18
-
I Am a Big Sister (Caroline Jayne Church)
by Caroline Jayne Church
- List rank#3
- Price$5.97
- Rating4.8
- Reviews16,011
-
Wildwood Chronicles 3-Book Box Set: Wildwood, Under Wildwood, Wildwood Imperium
by Colin Meloy
- List rank#4
- Price$35.97
- Rating4.8
- Reviews736
-
Wingfeather Saga Boxed Set: On the Edge of the Dark Sea of Darkness; North! Or Be Eaten; The Monster in the Hollows; The Warden and the Wolf King
- List rank#5
- Price$17.73
- Rating4.9
- Reviews2,588
-
Rodrick Rules (Diary of a Wimpy Kid #2): A hilariously awkward sibling showdown from the #1 international bestselling Diary of a Wimpy Kid series (Book 2)
by Jeff Kinney
- List rank#6
- Price$9.48
- Rating4.6
- Reviews24,811
-
I Am a Big Brother (Caroline Jayne Church)
by Caroline Jayne Church
- List rank#7
- Price$6.50
- Rating4.8
- Reviews17,710
-
The Boxcar Children Mysteries Boxed Set 1-4: The Boxcar Children; Surprise Island; The Yellow House; Mystery Ranch
- List rank#8
- Price$15
- Rating4.8
- Reviews8,899
-
Under Wildwood: A New York Times Bestseller (Wildwood Chronicles, 2)
by Colin Meloy
- List rank#9
- Price$9.59
- Rating4.7
- Reviews729
-
Same niche in Kindle eBooks: Siblings
FAQ
Is Siblings a good niche for Amazon KDP?
Its KDPTop opportunity score is 20/100, which makes it highly competitive. The median best seller has 2,490 reviews and sells for $8.50.
How many reviews do you need to rank in Siblings?
The median best seller has 2,490 reviews, and 11% of them have fewer than 100.
What do Siblings best sellers cost?
The median price is $8.50; half of the best sellers are priced between $6.75 and $10.23.
Can new books break into Siblings?
6% 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.