KDP categories · Top KDP authors
George Trombley: Amazon KDP author data
As of Nov 6, 2026, George Trombley has 18 books on Amazon, 16 of them on a best-seller list in the last 30 days (best rank #3), mostly in Japanese, Reference, Language Instruction.
| Median price | $13.95 |
|---|---|
| Price range (middle 50%) | $9.99 – $38.80 |
| Median reviews | 860 |
| Total reviews | 29,527 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 89% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $13.95, 53% below the median of their main category, Japanese.
George Trombley's best-ranked books
-
Japanese from Zero! 1: Proven Techniques to Learn Japanese for Students and Professionals
by George Trombley
- Price$31.95
- Rating4.8
- Reviews8,367
-
Japanese From Zero! 1: Proven Methods to Learn Japanese with integrated Workbook and Online Support
by George Trombley
- Price$9.99
- Rating4.8
- Reviews8,366
-
Korean From Zero! 1: Master the Korean Language and Hangul Writing System with Integrated Workbook and Online Course
by George Trombley
- Price$9.99
- Rating4.7
- Reviews1,719
-
Japanese from Zero! 2: Proven Techniques to Learn Japanese for Students and Professionals (Japanese Edition)
by George Trombley
- Price$39.97
- Rating4.8
- Reviews1,847
-
Japanese From Zero! 2: Proven Techniques to Learn Japanese for Students and Professionals
by George Trombley
- Price$9.99
- Rating4.8
- Reviews1,846
-
Japanese From Zero! 3: Continue Mastering the Japanese Language with Integrated Workbook: Volume 3
by George Trombley
- Price$39.97
- Rating4.8
- Reviews861
-
Kanji From Zero! 1: Proven Techniques to Learn Kanji with Integrated Workbook (Second Edition)
by George Trombley
- Price$39.03
- Rating4.8
- Reviews995
-
Japanese From Zero! 4: Proven Techniques to Learn Japanese for Students and Professionals (Japanese Edition)
by George Trombley
- Price$39.97
- Rating4.8
- Reviews563
-
Japanese From Zero! 3: Continue Mastering the Japanese Language with Integrated Workbook: Volume 3
by George Trombley
- Price$9.99
- Rating4.8
- Reviews860
-
Japanese From Zero! 5: Continue Mastering the Japanese Language and Kanji with Integrated Workbook
by George Trombley
- Price$39.97
- Rating4.9
- Reviews432
Main categories
FAQ
How many books does George Trombley have on Amazon?
KDPTop tracks 18 of their books; 16 made an Amazon list in the last 30 days.
Which categories does George Trombley publish in?
Their books chart most often in Japanese, Reference, Language Instruction.
How does George Trombley price their books?
The median price is $13.95; half of the books cost $9.99–$38.80.
Has George Trombley 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.