KDP categories · Top KDP authors
Roland S. Owens: Amazon KDP author data
As of Nov 6, 2026, Roland S. Owens has 21 books on Amazon, 17 of them on a best-seller list in the last 30 days (best rank #3), mostly in Testing & Certification, Repair, Automotive.
| Median price | $30.99 |
|---|---|
| Price range (middle 50%) | $15.99 – $30.99 |
| Median reviews | 3 |
| Total reviews | 60 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 81% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $30.99, 55% above the median of their main category, Testing & Certification.
Roland S. Owens's best-ranked books
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ASE A2 Automatic Transmission and Transaxle Test Prep: Automotive Service Excellence Study Guide with 1,000 Practice Questions, Torque Converter, Valve ... Explanations (ASE Test Preparation Book 17)
by Roland S. Owens
- Price$15.99
- Reviews-
-
ASE G1 Maintenance and Light Repair Test Prep: Automotive Service Excellence Study Guide with 1000+ Practice Questions, Brake Systems, Suspension, and ... Explanations (ASE Test Preparation Book 7)
by Roland S. Owens
- Price$15.99
- Rating5.0
- Reviews3
-
ASE A8 Engine Performance Test Prep: Comprehensive Study Guide with 1,000+ Practice Questions, Essential Strategies and Answer Explanations to Pass the Certification Exam (ASE Test Preparation)
by Roland S. Owens
- Price$30.99
- Rating5.0
- Reviews4
-
ASE A2 Automatic Transmission and Transaxle Test Prep: Automotive Service Excellence Study Guide with 1,000 Practice Questions, Torque Converter, ... Answer Explanations (ASE Test Preparation)
by Roland S. Owens
- Price$30.99
- Reviews-
-
ASE A7 Heating and Air Conditioning Test Prep: Automotive Service Excellence Exam Prep with 1,000 Practice Questions, Refrigerants, Compressors, Scan ... Explanations (ASE Test Preparation Book 5)
by Roland S. Owens
- Price$15.99
- Reviews-
-
ASE A7 Heating and Air Conditioning Test Prep: Automotive Service Excellence Exam Prep with 1,000 Practice Questions, Refrigerants, Compressors, Scan ... Answer Explanations (ASE Test Preparation)
by Roland S. Owens
- Price$30.99
- Reviews-
-
CNML Study Guide 2026–2027: Certified Nurse Manager and Leader Exam Prep with 2,000+ Practice Questions, Human Resource Management, Financial Stewardship, and Full Answer Explanations
by Roland S. Owens
- Price$39.76
- Rating5.0
- Reviews1
-
ASE A5 Brakes Test Prep: Complete Study Guide with 1,000 Practice Questions, Essential Strategies and Answer Explanations to Pass the Certification Exam (ASE Test Preparation)
by Roland S. Owens
- Price$30.99
- Rating4.5
- Reviews5
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CNML Study Guide 2026–2027: Certified Nurse Manager and Leader Exam Prep with 2,000+ Practice Questions, Human Resource Management, Financial Stewardship, and Full Answer Explanations
by Roland S. Owens
- Price$19.99
- Rating5.0
- Reviews1
-
CTS Certified Technology Specialist Exam Prep: Complete Study Guide with 2000 Practice Questions, AV Signal Flow, System Integration, and Full Answer Explanations
by Roland S. Owens
- Price$38
- Rating4.4
- Reviews8
Main categories
FAQ
How many books does Roland S. Owens have on Amazon?
KDPTop tracks 21 of their books; 17 made an Amazon list in the last 30 days.
Which categories does Roland S. Owens publish in?
Their books chart most often in Testing & Certification, Repair, Automotive.
How does Roland S. Owens price their books?
The median price is $30.99; half of the books cost $15.99–$30.99.
Has Roland S. Owens 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.