KDP categories · Top KDP authors
Civil Service (Professional, Books): Amazon KDP category data
Amazon Books Best Sellers data for Civil Service (Professional, Books), updated Nov 3, 2026: median price $29.97, median 14 reviews, average rating 4.4 and a KDPTop opportunity score of 37/100 (highly competitive).
| Price range (middle 50%) | $23.55 – $39.95 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 12% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 5% of the parent category Professional (309), one of the easier corners under it.
- At $29.97 its median price beats 88% of Books categories, leaving more margin per copy.
- Its review barrier is lower than in 78% of Books categories: the median best seller has only 14 reviews, so new books can chart with few.
Top 10 Civil Service best sellers
-
ASVAB Test Prep: The Most Powerful Study Guide to Get Ready for the Current Exam in Just 1 Week & Score 99 on the AFQT at Your First Try [INCLUDES: ASVAB Test Simulator, Videos Lessons & Flashcards]
by Ryan MacArmen
- List rank#1
- Price$23.10
- Rating4.3
- Reviews1,512
-
ASVAB Test Prep & Study Guide 2027-2028: AFQT & All Subtests | Step-by-Step Explanations, Practice Tests, Audio & Flashcards | First-Time & Retaker Ready [Unofficial]
by Armed Forces Elite Minds
- List rank#2
- Price$29.81
- Rating4.7
- Reviews315
-
Firefighter Exam Prep: The All-in-One Study Guide to Mastering the Test in No Time – Save Effort with Real Simulations, and Proven CPAT Physical Strategies to Get Ready Without the Stress
by Josh Adair
- List rank#3
- Price$24.95
- Rating4.6
- Reviews119
-
![ASVAB Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Master Eve book cover by Optimal Prep Publishing](https://images-na.ssl-images-amazon.com/images/I/71kvGabuz+L._UX300__PJkp-sticker-v1,TopRight,0,-50_AC_UL300_SR300,200_.jpg)
ASVAB Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Master Every ASVAB Section and Ace the AFQT with Exam-Ready Practice Tests and Step-by-Step Explanations
- List rank#4
- Price$29.99
- Rating4.6
- Reviews569
-
PELLET B Study Guide: California POST Exam Secrets Study Guide, 4 Full-Length Practice Tests, Step-by-Step Review Video Tutorials for the California ... Standards) (Mometrix Test Preparation)
by Mometrix Test Prep
- List rank#5
- Price$27.96
- Rating4.5
- Reviews496
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Ciudadanía Americana 2027: Guía de estudio en español para el examen de naturalización de USCIS: las 128 preguntas oficiales con la pronunciación de ... de inglés y la entrevista (Spanish Edition)
- List rank#6
- Price$16.42
- Rating5.0
- Reviews2
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Police Officer Exam Prep 2026-2027: Your Complete Step-by-Step Roadmap with 12 Full-Length Practice Tests,2000+ Real Questions & Confidence-Building Strategies to Pass,Rank Higher & Start Your Career
by Vere Simonds
- List rank#7
- Price$25.97
- Rating4.6
- Reviews60
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PELLET B Exam Prep: Comprehensive Training with 1000+ Practice Questions & 6 Full-Length Simulation to Eliminate Test Anxiety, Master CLOZE, Build Confidence and Secure Your Law Enforcement Career
by Derek Marshal
- List rank#8
- Price$24.90
- Rating4.8
- Reviews72
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Police Exam Prep 7th Edition: 4 Practice Tests + Proven Strategies (Kaplan Test Prep)
by Kaplan Test Prep
- List rank#9
- Price$19.34
- Rating4.5
- Reviews776
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Electrician's Helper (Career Examination)
by Passbooks
- List rank#10
- Price$39.95
- Rating5.0
- Reviews1
FAQ
Is Civil Service a good niche for Amazon KDP?
Its KDPTop opportunity score is 37/100, which makes it highly competitive. The median best seller has 14 reviews and sells for $29.97.
How many reviews do you need to rank in Civil Service?
The median best seller has 14 reviews, and 85% of them have fewer than 100.
What do Civil Service best sellers cost?
The median price is $29.97; half of the best sellers are priced between $23.55 and $39.95.
Can new books break into Civil Service?
12% 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.