KDP categories · Top KDP authors
Quentin Docter: Amazon KDP author data
As of Nov 6, 2026, Quentin Docter has 13 books on Amazon, 9 of them on a best-seller list in the last 30 days (best rank #1), mostly in CompTIA, Security, Security & Encryption.
| Median price | $32.88 |
|---|---|
| Price range (middle 50%) | $24.73 – $51.16 |
| Median reviews | 204 |
| Total reviews | 4,453 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 69% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
Quentin Docter's best-ranked books
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CompTIA A+ Complete Study Guide, 2-Volume Set: Volume 1 Core 1 Exam 220-1201 and Volume 2 Core 2 Exam 220-1202 (Sybex Study Guide)
by Quentin Docter
- Price$25.24
- Rating4.6
- Reviews204
- Published2025-07
-
CompTIA A+ Complete Certification Kit: Core 1 Exam 220-1201 and Core 2 Exam 220-1202 (Sybex Study Guide)
by Quentin Docter
- Price$72.80
- Rating4.5
- Reviews48
- Published2025-08
-
CompTIA A+ Complete Study Guide, 2-Volume Set: Volume 1 Core 1 Exam 220-1201 and Volume 2 Core 2 Exam 220-1202 (Sybex Study Guide)
by Quentin Docter
- Price$39
- Rating4.6
- Reviews204
-
CompTIA Tech+ Study Guide: Exam FC0-U71 (Sybex Study Guide)
by Quentin Docter
- Price$32.88
- Rating4.7
- Reviews43
-
CompTIA A+ Complete Certification Kit: Exam 220-1101 and Exam 220-1102
by Quentin Docter
- Price$90
- Rating4.7
- Reviews425
- Published2022-05
-
CompTIA A+ Complete Study Guide: Core 1 Exam 220-1101 and Core 2 Exam 220-1102 (Sybex Study Guide)
by Quentin Docter
- Price$24.08
- Rating4.6
- Reviews931
- Published2022-05
-
Comptia A+ Complete: Exam 220-1001 and Exam 220-1002
by Quentin Docter
- Price$29.23
- Rating4.6
- Reviews947
-
CompTIA A+ Complete Study Guide: Core 1 Exam 220-1101 and Core 2 Exam 220-1102 (Sybex Study Guide)
by Quentin Docter
- Price$38
- Rating4.6
- Reviews931
-
CompTIA IT Fundamentals (ITF+) Study Guide: Exam FC0-U61 (Sybex Study Guide)
by Quentin Docter
- Price$20.91
- Rating4.7
- Reviews607
-
CompTIA Cloud Essentials+ Study Guide: Exam CLO-002
by Quentin Docter
- Price$24.23
- Rating4.8
- Reviews50
- Published2020-01
Main categories
FAQ
How many books does Quentin Docter have on Amazon?
KDPTop tracks 13 of their books; 9 made an Amazon list in the last 30 days.
Which categories does Quentin Docter publish in?
Their books chart most often in CompTIA, Security, Security & Encryption.
How does Quentin Docter price their books?
The median price is $32.88; half of the books cost $24.73–$51.16.
Has Quentin Docter released new books recently?
0 new books in the last 30 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.