KDP categories · Top KDP authors
Brian Hagopian: Amazon KDP author data
As of Nov 6, 2026, Brian Hagopian has 30 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #19), mostly in Testing & Certification, Industry, Automotive.
| Median price | $63.07 |
|---|---|
| Price range (middle 50%) | $58.60 – $71.21 |
| Median reviews | 1 |
| Total reviews | 2 |
| New listings (30 days, incl. new editions) | 6 |
| Breakout books (30 days) | 3 |
What stands out
- Median price $63.07, 215% above the median of their main category, Testing & Certification.
- 6 new listings in the last 30 days (new editions included), 3 of them broke into a Best Sellers list.
Brian Hagopian's best-ranked books
-
Automotive G1, A1 to A9 and L1, L2, L3, L4: The definitive master guide to ASE certification and advanced vehicle diagnostics. Includes ASE style test questions.
by Brian Hagopian
- Price$57.19
- Rating5.0
- Reviews1
-
Automotive G1, A1 to A9 and L1, L2, L3, L4: The definitive master guide to ASE certification and advanced vehicle diagnostics. Includes ASE style test questions.
by Brian Hagopian
- Price$57.32
- Rating5.0
- Reviews1
-
Diagnostic, Repair and Theory for the Pre-Electronic Automotive Era: Mastering Vintage Automotive Systems and Diagnostics Without Modern Scan Tools and Technology
by Brian Hagopian
- Price$71.21
- Reviews-
- Published2026-10
-
ASE A5 Brakes: Theory, Diagnosis, Overhaul and ASE A5 service for modern braking systems.
by Brian Hagopian
- Price$85
- Reviews-
-
ASE G1 Automotive Maintenance and Light Repair: Shop safety, systems, and skills for ASE G1 certification success
by Brian Hagopian
- Price$87.56
- Reviews-
-
L1 Advanced Engine Performance: ASE L1 diagnostics, OBD-II strategy, and root-cause engine performance
by Brian Hagopian
- Price$65
- Reviews-
-
ASE G1 Automotive Maintenance and Light Repair: Shop safety, systems, and skills for ASE G1 certification success
by Brian Hagopian
- Price$0
- Reviews-
- Published2026-10
-
L4 Advanced Driver Assistance Systems (ADAS) Specialist: Master ADAS diagnostics, calibration, and ASE L4 certification
by Brian Hagopian
- Price$0
- Reviews-
- Published2026-10
-
Hybrid, EV, and Alternative Fuels: Mastering the future of propulsion from high-voltage systems to sustainable alternative fuels
by Brian Hagopian
- Price$0
- Reviews-
- Published2026-09
-
High-Performance Automotive Modifications: System Upgrades, Legal Compliance, Advanced Cost-Benefit, Execution and a Technical Blueprint for Safety and Performance on the Road and Track
by Brian Hagopian
- Price$0
- Reviews-
- Published2026-09
Main categories
FAQ
How many books does Brian Hagopian have on Amazon?
KDPTop tracks 30 of their books; 8 made an Amazon list in the last 30 days.
Which categories does Brian Hagopian publish in?
Their books chart most often in Testing & Certification, Industry, Automotive.
How does Brian Hagopian price their books?
The median price is $63.07; half of the books cost $58.60–$71.21.
Has Brian Hagopian released new books recently?
6 new books in the last 30 days, 3 of which reached a Best Sellers list.
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.