KDP categories · Top KDP authors
S.A. Ren: Amazon KDP author data
As of Nov 6, 2026, S.A. Ren has 11 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #6), mostly in Martial Arts, Sports.
| Median price | $3.99 |
|---|---|
| Price range (middle 50%) | $3.74 – $3.99 |
| Median reviews | 1 |
| Total reviews | 11 |
| New books (30 days) | 4 |
| Breakout books (30 days) | 4 |
What stands out
- 64% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $3.99, 73% below the median of their main category, Martial Arts.
- 4 new books in the last 30 days, 4 of them broke into a Best Sellers list.
S.A. Ren's best-ranked books
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Lotus in the Dojo: A Clean Coming-Of-Age Romance
by S.A. Ren
- Price$0.99
- Rating4.3
- Reviews9
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Lotus in the Dojo: Volume 2
by S.A. Ren
- Price$3.99
- Rating5.0
- Reviews1
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Lotus in the Dojo: Volume 2
by S.A. Ren
- Price-
- Rating5.0
- Reviews1
- Published2026-06
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Lotus in the Dojo: Volume 1
by S.A. Ren
- Price-
- Reviews-
- Published2026-07
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Lotus In The Dojo: Volume 3
by S.A. Ren
- Price-
- Reviews-
- Published2026-07
Main categories
FAQ
How many books does S.A. Ren have on Amazon?
KDPTop tracks 11 of their books; 7 made an Amazon list in the last 30 days.
Which categories does S.A. Ren publish in?
Their books chart most often in Martial Arts, Sports.
How does S.A. Ren price their books?
The median price is $3.99; half of the books cost $3.74–$3.99.
Has S.A. Ren released new books recently?
4 new books in the last 30 days, 4 of which reached a Best Sellers list.
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.