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Reference & Collections (Biographies & Memoirs, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Reference & Collections (Biographies & Memoirs, Kindle eBooks), updated Nov 3, 2026: median price $7.99, median 98 reviews, average rating 4.5 and a KDPTop opportunity score of 28/100 (highly competitive).
| Price range (middle 50%) | $3.99 – $10.24 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 11% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 6% of the parent category Biographies & Memoirs (1,668), one of the easier corners under it.
- Prices spread wide: the middle half runs from $3.99 to $10.24, so budget editions and premium or boxed sets sell side by side.
Top 10 Reference & Collections best sellers
-
Benjamin Franklin: An American Life
- List rank#1
- Price$14.99
- Rating4.6
- Reviews6,150
-
Kasher in the Rye: The True Tale of a White Boy from Oakland Who Became a Drug Addict, Criminal, Mental Patient, and Then Turned 16
by Moshe Kasher
- List rank#2
- Price$11.99
- Rating4.4
- Reviews2,094
-
The Big Book of Serial Killers: 150 Serial Killer Files of the World's Worst Murderers (An Encyclopedia of Serial Killers 1)
- List rank#3
- Price$9.99
- Rating4.7
- Reviews8,778
-
Room Full of Mirrors: A Biography of Jimi Hendrix
by Charles R. Cross
- List rank#4
- Price$1.99
- Rating4.7
- Reviews917
-
The Art of Memoir: A Master Class in the Essential Elements of Great Memoir Writing
by Mary Karr
- List rank#5
- Price$14.99
- Rating4.5
- Reviews1,719
-
ABUSED TO DEATH 2: Child abuse true crime biography, including the stepdaughter of serial killers, Fred and Rose West
- List rank#6
- Price$2.99
- Rating4.7
- Reviews927
-
A Man Without a Country
- List rank#7
- Price$11.99
- Rating4.5
- Reviews1,726
-
Trillion Dollar Coach: The Leadership Playbook of Silicon Valley's Bill Campbell
by Eric Schmidt
- List rank#8
- Price$19.49
- Rating4.5
- Reviews3,531
-
The Serial Killer Books: 15 Famous Serial Killers True Crime Stories That Shocked The World (The Serial Killer Files Book 1)
- List rank#9
- Price$4.99
- Rating4.2
- Reviews806
-
Profiles in Courage: JFK's Pultizer Prize-Winning Classic (Harper Perennial Deluxe Editions)
by John F. Kennedy
- List rank#10
- Price$7.99
- Rating4.6
- Reviews2,123
Same niche in Books: Reference & Collections
FAQ
Is Reference & Collections a good niche for Amazon KDP?
Its KDPTop opportunity score is 28/100, which makes it highly competitive. The median best seller has 98 reviews and sells for $7.99.
How many reviews do you need to rank in Reference & Collections?
The median best seller has 98 reviews, and 50% of them have fewer than 100.
What do Reference & Collections best sellers cost?
The median price is $7.99; half of the best sellers are priced between $3.99 and $10.24.
Can new books break into Reference & Collections?
11% 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.