KDP categories · Top KDP authors
Factology Guru: Amazon KDP author data
As of Nov 6, 2026, Factology Guru has 105 books on Amazon, 12 of them on a best-seller list in the last 30 days (best rank #1), mostly in Universe, Solar System, Astrophysics & Space Science.
| Median price | $3.99 |
|---|---|
| Price range (middle 50%) | $3.99 – $3.99 |
| Median reviews | 1 |
| Total reviews | 6 |
| New listings (30 days, incl. new editions) | 5 |
| Breakout books (30 days) | 4 |
What stands out
- Only 11% of the catalog charted in the last 30 days; sales rest on a few titles.
- 5 new listings in the last 30 days (new editions included), 4 of them broke into a Best Sellers list.
Factology Guru's best-ranked books
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100 FACTS ABOUT BUCKINGHAM PALACE: The Palace Full Of Secrets (100 Facts About Landmarks)
by Factology Guru
- Price$3.99
- Reviews-
- Published2026-10
-
100 FACTS ABOUT COMETS: Dirty Snowballs With Billion-Mile Tails (100 FACTS ABOUT SPACE AND THE UNIVERSE)
by Factology Guru
- Price$3.99
- Rating5.0
- Reviews1
-
100 FACTS ABOUT NEBULAE: The Universe´s Greatest Art (100 FACTS ABOUT SPACE AND THE UNIVERSE)
by Factology Guru
- Price$3.99
- Reviews-
-
100 Facts About the James Webb Telescope: Humanity's Deepest Eye (100 FACTS ABOUT SPACE AND THE UNIVERSE)
by Factology Guru
- Price$3.99
- Reviews-
-
100 FACTS ABOUT THE SYDNEY OPERA HOUSE: The Architect Never Saw It Finished (100 Facts About Landmarks)
by Factology Guru
- Price$3.99
- Reviews-
-
100 FACTS ABOUT BLACKBEARD: The Most Feared Pirate Who Ever Sailed The Caribbean (100 Facts About Pirates and Buccaneers)
by Factology Guru
- Price$0
- Reviews-
- Published2026-08
-
100 FACTS ABOUT ANNE BONNY: The Woman Who Disguised Herself As A Man To Sail With Pirates (100 Facts About Pirates and Buccaneers)
by Factology Guru
- Price$3.99
- Reviews-
- Published2026-08
-
100 FACTS ABOUT THE MILKY WAY: The Galaxy We Call Home (100 FACTS ABOUT SPACE AND THE UNIVERSE)
by Factology Guru
- Price$3.99
- Reviews-
-
100 FACTS ABOUT OAK ISLAND: The Treasure Hunt That Never Ends (100 Facts About Mystery, Lost History & The Unexplained)
by Factology Guru
- Price$0
- Rating5.0
- Reviews2
- Published2026-05
-
100 FACTS ABOUT THE VOYNICH MANUSCRIPT: The Book Nobody Can Read (100 Facts About Mystery, Lost History & The Unexplained)
by Factology Guru
- Price$0
- Rating5.0
- Reviews1
- Published2026-06
Main categories
FAQ
How many books does Factology Guru have on Amazon?
KDPTop tracks 105 of their books; 12 made an Amazon list in the last 30 days.
Which categories does Factology Guru publish in?
Their books chart most often in Universe, Solar System, Astrophysics & Space Science.
How does Factology Guru price their books?
The median price is $3.99; half of the books cost $3.99–$3.99.
Has Factology Guru released new books recently?
5 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.