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Spies (Mysteries & Thrillers, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Spies (Mysteries & Thrillers, Kindle eBooks), updated Nov 3, 2026: median price $6.99, median 613 reviews, average rating 4.5 and a KDPTop opportunity score of 17/100 (highly competitive).
| Price range (middle 50%) | $3.99 – $8.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 5% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 14% of the parent category Mysteries & Thrillers (4,418), one of the easier corners under it.
- Its review barrier is higher than in 83% of Kindle eBooks categories: the median best seller has 613 reviews, so new books need time to build up.
- Only 5% of its best sellers are under 90 days old, fewer than in 76% of Kindle eBooks categories: established titles hold the list.
Top 10 Spies best sellers
-
The Gilded Cage: A Gripping YA Fantasy of Political Intrigue, Deadly Lies, and Rebellion (The Prison Healer Book 2)
by Lynette Noni
- List rank#1
- Price$13.99
- Rating4.4
- Reviews13,628
-
A Girl Named Digit (Digit Series Book 1)
- List rank#2
- Price$1.99
- Rating4.3
- Reviews504
-
Double Digit (Digit series Book 2)
- List rank#3
- Price$1.99
- Rating4.4
- Reviews375
-
They Call Me Alexandra Gastone
by T.A. Maclagan
- List rank#4
- Price$0.99
- Rating4.3
- Reviews146
-
I'd Tell You I Love You, But Then I'd Have to Kill You (Gallagher Girls Book 1)
by Ally Carter
- List rank#5
- Price$8.99
- Rating4.4
- Reviews3,092
-
My Name Is Milena Rokva (Alexandra Gastone Book 2)
by T.A. Maclagan
- List rank#6
- Price$1.99
- Rating4.4
- Reviews47
-
Code Name Verity
by Elizabeth Wein
- List rank#7
- Price$9.99
- Rating4.2
- Reviews5,963
-
Only the Good Spy Young (Gallagher Girls Book 4)
by Ally Carter
- List rank#8
- Price$7.99
- Rating4.7
- Reviews1,735
-
Etiquette & Espionage (Finishing School Series Book 1)
by Gail Carriger
- List rank#9
- Price$6.99
- Rating4.4
- Reviews3,090
-
Out of Sight, Out of Time (Gallagher Girls Book 5)
by Ally Carter
- List rank#10
- Price$7.99
- Rating4.7
- Reviews1,898
FAQ
Is Spies a good niche for Amazon KDP?
Its KDPTop opportunity score is 17/100, which makes it highly competitive. The median best seller has 613 reviews and sells for $6.99.
How many reviews do you need to rank in Spies?
The median best seller has 613 reviews, and 14% of them have fewer than 100.
What do Spies best sellers cost?
The median price is $6.99; half of the best sellers are priced between $3.99 and $8.99.
Can new books break into Spies?
5% 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.