KDP categories · Top KDP authors
Zack Kaplan: Amazon KDP author data
As of Nov 6, 2026, Zack Kaplan has 24 books on Amazon, 17 of them on a best-seller list in the last 30 days (best rank #36), mostly in Alien Contact, Science Fiction Graphic Novels, Mystery, Thriller & Suspense.
| Median price | $4.99 |
|---|---|
| Price range (middle 50%) | $4.99 – $17.99 |
| Median reviews | 5 |
| Total reviews | 232 |
| New listings (30 days, incl. new editions) | 7 |
| Breakout books (30 days) | 1 |
What stands out
- 71% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $4.99, 17% below the median of their main category, Alien Contact.
- 7 new listings in the last 30 days (new editions included), 1 of them broke into a Best Sellers list.
Zack Kaplan's best-ranked books
-
Kill All Immortals II
by Zack Kaplan
- Price$5.99
- Rating4.8
- Reviews5
-
Port of Earth Deluxe Edition
by Zack Kaplan
- Price$18.98
- Rating4.8
- Reviews11
-
-
-
The Midnight: Shadows
by Zack Kaplan
- Price$5.99
- Rating4.6
- Reviews49
-
-
-
-
-
Main categories
FAQ
How many books does Zack Kaplan have on Amazon?
KDPTop tracks 24 of their books; 17 made an Amazon list in the last 30 days.
Which categories does Zack Kaplan publish in?
Their books chart most often in Alien Contact, Science Fiction Graphic Novels, Mystery, Thriller & Suspense.
How does Zack Kaplan price their books?
The median price is $4.99; half of the books cost $4.99–$17.99.
Has Zack Kaplan released new books recently?
7 new books 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.