KDP categories · Top KDP authors
K. Black: Amazon KDP author data
As of Nov 6, 2026, K. Black has 6 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #1), mostly in Training, Weight Training, Running & Jogging.
| Median price | $12.99 |
|---|---|
| Price range (middle 50%) | $10.74 – $12.99 |
| Median reviews | 414 |
| Total reviews | 4,156 |
| New books (30 days) | 1 |
| Breakout books (30 days) | 1 |
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 $12.99, 43% above the median of their main category, Training.
K. Black's best-ranked books
-
Tactical Barbell III: Operational Athlete
by K. Black
- Price$12.99
- Rating4.9
- Reviews86
- Published2026-09
-
Tactical Barbell: Green Protocol
by K. Black
- Price$12.99
- Rating4.8
- Reviews406
-
Tactical Barbell II: Conditioning
by K. Black
- Price$9.98
- Rating4.7
- Reviews1,112
-
Tactical Barbell: Definitive Strength Training for the Operational Athlete
by K. Black
- Price$9.99
- Rating4.8
- Reviews1,725
-
Tactical Barbell: Mass Protocol
by K. Black
- Price$12.99
- Rating4.8
- Reviews421
-
Tactical Barbell: Green Protocol
by K. Black
- Price$30
- Rating4.8
- Reviews406
Main categories
FAQ
How many books does K. Black have on Amazon?
KDPTop tracks 6 of their books; 6 made an Amazon list in the last 30 days.
Which categories does K. Black publish in?
Their books chart most often in Training, Weight Training, Running & Jogging.
How does K. Black price their books?
The median price is $12.99; half of the books cost $10.74–$12.99.
Has K. Black released new books recently?
1 new book in the last 30 days, 1 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.