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Alex Winterfield: Amazon KDP author data
As of Nov 6, 2026, Alex Winterfield has 7 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #1), mostly in Maintenance & Repair, Home Repair, Industrial Technology.
| Median price | $4.99 |
|---|---|
| Price range (middle 50%) | $4.99 – $11.49 |
| Median reviews | 107 |
| Total reviews | 644 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $4.99, 33% below the median of their main category, Maintenance & Repair.
Alex Winterfield's best-ranked books
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The Complete HVAC BIBLE for Beginners: A Step-by-Step Guide to Heating, Ventilation and Air Conditioning Systems - Maintenance and Troubleshooting to Become the HVAC Expert and Slash the Bill
by Alex Winterfield
- Price$4.99
- Rating3.8
- Reviews206
-
EPA 608 Study Guide: Pass the EPA Certification Exam on Your First Try | Updated Strategies, Practice Tests, and a Step-by-Step Action Plan for Busy Technicians
by Alex Winterfield
- Price$3.99
- Rating4.6
- Reviews9
-
La biblia completa de HVAC para principiantes (Spanish Edition)
by Alex Winterfield
- Price$4.99
- Reviews-
-
The Complete HVAC BIBLE for Beginners: A Step-by-Step Guide to Heating, Ventilation and Air Conditioning Systems - Maintenance and Troubleshooting to Become the HVAC Expert and Slash the Bill
by Alex Winterfield
- Price$19.99
- Rating3.8
- Reviews206
-
EPA 608 Study Guide: Pass the EPA Certification Exam on Your First Try | Updated Strategies, Practice Tests, and a Step-by-Step Action Plan for Busy Technicians
by Alex Winterfield
- Price$4.99
- Rating4.6
- Reviews9
-
EPA 608 Study Guide: Pass the EPA Certification Exam on Your First Try | Updated Strategies, Practice Tests, and a Step-by-Step Action Plan for Busy Technicians
by Alex Winterfield
- Price$16.99
- Rating4.6
- Reviews9
-
The Complete HVAC BIBLE for Beginners: A Step-by-Step Guide to Heating, Ventilation and Air Conditioning Systems - Maintenance and Troubleshooting to Become the HVAC Expert and Slash the Bill
by Alex Winterfield
- Price$5.99
- Rating3.8
- Reviews205
Main categories
FAQ
How many books does Alex Winterfield have on Amazon?
KDPTop tracks 7 of their books; 7 made an Amazon list in the last 30 days.
Which categories does Alex Winterfield publish in?
Their books chart most often in Maintenance & Repair, Home Repair, Industrial Technology.
How does Alex Winterfield price their books?
The median price is $4.99; half of the books cost $4.99–$11.49.
Has Alex Winterfield 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.