KDP categories · Top KDP authors
Sam Humphries: Amazon KDP author data
As of Nov 6, 2026, Sam Humphries has 30 books on Amazon, 15 of them on a best-seller list in the last 30 days (best rank #10), mostly in Contemporary Women, Military, Science Fiction & Fantasy.
| Median price | $5.99 |
|---|---|
| Price range (middle 50%) | $2.99 – $12.99 |
| Median reviews | 81 |
| Total reviews | 2,958 |
| New listings (30 days, incl. new editions) | 4 |
| Breakout books (30 days) | 0 |
What stands out
- 50% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $5.99, 26% below the median of their main category, Contemporary Women.
- 4 new listings in the last 30 days (new editions included).
Sam Humphries's best-ranked books
-
Legendary Star-Lord Vol. 1: Face It, I Rule
by Sam Humphries
- Price$2.99
- Rating4.4
- Reviews161
-
Green Lanterns (2016-) Vol. 4: The First Ring
by Sam Humphries
- Price$9.59
- Rating4.6
- Reviews166
-
ゴリアテ・ガールズ 第1-5話完全版 (Comixology Originals) (Japanese Edition)
by Sam Humphries
- Price$6.99
- Rating5.0
- Reviews1
-
Legendary Star-Lord Vol. 2: Rise Of The Black Vortex
by Sam Humphries
- Price$4.99
- Rating4.3
- Reviews75
-
Harley Quinn (2016-) Vol. 4: The Final Trial
by Sam Humphries
- Price$12.99
- Rating4.8
- Reviews127
-
Goliath Girls #1: Special Edition (Comixology Originals)
by Sam Humphries
- Price$2.99
- Rating3.7
- Reviews216
-
Guardians of the Galaxy & X-Men: The Black Vortex
by Sam Humphries
- Price$8.99
- Rating4.5
- Reviews254
-
Goliath Girls #2 (Comixology Originals)
by Sam Humphries
- Price$2.99
- Rating4.0
- Reviews114
-
Goliath Girls #4 (Comixology Originals)
by Sam Humphries
- Price$2.99
- Rating4.1
- Reviews73
-
Goliath Girls #5 (Comixology Originals)
by Sam Humphries
- Price$2.99
- Rating4.3
- Reviews113
Main categories
FAQ
How many books does Sam Humphries have on Amazon?
KDPTop tracks 30 of their books; 15 made an Amazon list in the last 30 days.
Which categories does Sam Humphries publish in?
Their books chart most often in Contemporary Women, Military, Science Fiction & Fantasy.
How does Sam Humphries price their books?
The median price is $5.99; half of the books cost $2.99–$12.99.
Has Sam Humphries released new books recently?
4 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.