KDP categories · Top KDP authors
Cliff Ruggles: Amazon KDP author data
As of Nov 6, 2026, Cliff Ruggles has 6 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #6), mostly in Repair & Maintenance, Owner's Manuals & Maintenance Guides, Do-It-Yourself.
| Median price | $29.91 |
|---|---|
| Price range (middle 50%) | $26.96 – $30.51 |
| Median reviews | 503 |
| Total reviews | 2,691 |
| 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 $29.91, 26% above the median of their main category, Repair & Maintenance.
Cliff Ruggles's best-ranked books
-
How to Rebuild & Modify Rochester Quadrajet Carburetors (S-a Design)
by Cliff Ruggles
- Price$29.95
- Rating4.7
- Reviews650
-
How to Rebuild & Modify GM Turbo 400 Transmissions (Workbench How to Series)
by Cliff Ruggles
- Price$32.95
- Rating4.7
- Reviews504
-
GM Automatic Overdrive Transmission Builder's and Swapper's Guide: Covers 700-R4, 4L60 and 4L60E Transmissions (Sa Design)
by Cliff Ruggles
- Price$30.69
- Rating4.6
- Reviews471
-
GM Turbo 350 Transmissions: How to Rebuild and Modify
by Cliff Ruggles
- Price$29.88
- Rating4.7
- Reviews418
-
How to Rebuild & Modify GM Turbo 400 Transmissions
by Cliff Ruggles
- Price$25.99
- Reviews-
-
How to Rebuild & Modify Rochester Quadrajet Carburetors
by Cliff Ruggles
- Price$23.96
- Rating4.7
- Reviews649
Main categories
FAQ
How many books does Cliff Ruggles have on Amazon?
KDPTop tracks 6 of their books; 6 made an Amazon list in the last 30 days.
Which categories does Cliff Ruggles publish in?
Their books chart most often in Repair & Maintenance, Owner's Manuals & Maintenance Guides, Do-It-Yourself.
How does Cliff Ruggles price their books?
The median price is $29.91; half of the books cost $26.96–$30.51.
Has Cliff Ruggles 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.