KDP categories · Top KDP authors
Siu Lun Yuen: Amazon KDP author data
Siu Lun Yuen has 57 books on Amazon, 29 of them on a best-seller list in the last 30 days (best rank #14), mostly in History, Equipment, Clocks & Watches.
57Books on Amazon
29Listed in 30 days
4.0Average rating
| Median price | $7.99 |
|---|---|
| Price range (middle 50%) | $6.74 – $9.24 |
| Median reviews | 2 |
| Total reviews | 83 |
| New books (30 days) | 15 |
| Breakout books (30 days) | 4 |
What stands out
- 51% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $7.99, 29% below the median of their main category, History.
- 15 new books in the last 30 days, 4 of them broke into a Best Sellers list.
Siu Lun Yuen's best-ranked books
-
Hasselblad: Eighty Years of Medium Format Mastery Photography (Camera Brand Story Book 6)
by Siu Lun Yuen
- Price$6.99
- Rating3.8
- Reviews4
-
Casio: The Time Machine- History Of Casio Watch
by Siu Lun Yuen
- Price$8.99
- Rating3.4
- Reviews11
-
Zeiss Lens: A History of the Optics from Jena and Oberkochen
by Siu Lun Yuen
- Price$10.99
- Reviews-
-
100 GREATEST CAMERA LENSES OF ALL TIME: ONE HUNDRED LEGENDARY LENSES. ONE DEFINITIVE RANKING. (Camera Brand Story Book 15)
by Siu Lun Yuen
- Price$6.99
- Reviews-
-
Fujifilm GFX Rethink & Redefine: The Modern Medium Format System Explained (Camera Brand Story Book 12)
by Siu Lun Yuen
- Price$8.99
- Rating3.4
- Reviews3
-
Canon Before Autofocus: The Cameras and Lenses of the Manual Era, 1934–1990 (Camera Brand Story Book 16)
by Siu Lun Yuen
- Price$8.99
- Reviews-
- Published2026-10
-
LEICA ALIVE: A Practical Guide to Repair, Maintenance, and Longevity
by Siu Lun Yuen
- Price$7.99
- Rating3.0
- Reviews4
-
Nvidia Technology for Dummies: From Gaming Graphics to AI Supercomputers
by Siu Lun Yuen
- Price$13.99
- Rating4.5
- Reviews2
-
Olympus Camera: A Comprehensive History of Olympus Cameras Zuiko Lenses, and the Rise of the OM System (Camera Brand Story Book 13)
by Siu Lun Yuen
- Price$8.99
- Rating3.5
- Reviews2
-
Leica — The Brand of Light and Legacy: Leica Camera History, Design & Legacy,” “The Leica Story for Photographers & Collectors.” (Camera Brand Story Book 3)
by Siu Lun Yuen
- Price$7.99
- Rating3.0
- Reviews6
- Published2025-08
Main categories
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.