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CK Quarterman: Amazon KDP author data
As of Nov 6, 2026, CK Quarterman has 32 books on Amazon, 19 of them on a best-seller list in the last 30 days (best rank #8), mostly in Fantasy, Angelology & Demonology, UFOs.
| Median price | $6.49 |
|---|---|
| Price range (middle 50%) | $5.99 – $8.71 |
| Median reviews | 10 |
| Total reviews | 450 |
| New books (30 days) | 16 |
| Breakout books (30 days) | 1 |
What stands out
- 59% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $6.49, 50% below the median of their main category, Fantasy.
- 16 new books in the last 30 days, 1 of them broke into a Best Sellers list.
CK Quarterman's best-ranked books
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THE WATCHERS FALLEN: They Were Not Supposed to Walk Among Us: The Hidden World of the Sons of God and the Nephilim (The Malaterrestrials Series Book 2)
by CK Quarterman
- Price$5.99
- Rating4.7
- Reviews39
-
Disclosure: They Are Not Extraterrestrials: The Greatest Cover-Up in History: What UFOs Actually Are — And Why It Changes Everything (The Malaterrestrials Series Book 1)
by CK Quarterman
- Price$5.99
- Rating3.9
- Reviews68
-
FALLEN ANGELS & MALATERRESTRIALS: Record Behind UFOs, Bigfoot, and the Missing (The Malaterrestrials Series Book 3)
by CK Quarterman
- Price$5.99
- Rating5.0
- Reviews2
-
Islamic Antichrist: Revelation, Know the End
by CK Quarterman
- Price$5.99
- Rating3.7
- Reviews22
- Published2015-07
-
Fallen Angels: Giants, UFO Encounters and The New World Order
by CK Quarterman
- Price$7.99
- Rating4.0
- Reviews92
- Published2012-01
-
The Watchers
by CK Quarterman
- Price$0.99
- Rating4.4
- Reviews34
- Published2014-09
-
THE WATCHERS' WAR: Some Deals Were Never Meant to Be Undone They Watch, They Fell, They Returned, the Plan Never Stopped. Novel of Ancient Plans and Modern Betrayal (Watchers' Universe Book 1)
by CK Quarterman
- Price$5.99
- Rating4.8
- Reviews28
-
Genesis Secrets Revealed: Primeval
by CK Quarterman
- Price$0.99
- Rating4.0
- Reviews21
- Published2013-01
-
Casting Out Demons
by CK Quarterman
- Price$16.99
- Rating4.6
- Reviews17
- Published2014-01
-
Demons & Deliverance
by CK Quarterman
- Price$19.25
- Rating4.2
- Reviews16
- Published2013-03
Main categories
FAQ
How many books does CK Quarterman have on Amazon?
KDPTop tracks 32 of their books; 19 made an Amazon list in the last 30 days.
Which categories does CK Quarterman publish in?
Their books chart most often in Fantasy, Angelology & Demonology, UFOs.
How does CK Quarterman price their books?
The median price is $6.49; half of the books cost $5.99–$8.71.
Has CK Quarterman released new books recently?
16 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.