KDP categories · Top KDP authors
TJ Allen: Amazon KDP author data
As of Nov 6, 2026, TJ Allen has 127 books on Amazon, 16 of them on a best-seller list in the last 30 days (best rank #33), mostly in Reference, Gravity, Energy.
| Median price | $9.99 |
|---|---|
| Price range (middle 50%) | $9.99 – $12.99 |
| Median reviews | 1 |
| Total reviews | 13 |
| New books (30 days) | 3 |
| Breakout books (30 days) | 1 |
What stands out
- Only 13% of the catalog charted in the last 30 days; sales rest on a few titles.
- 3 new books in the last 30 days, 1 of them broke into a Best Sellers list.
TJ Allen's best-ranked books
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Gravity: from the series "The Science of Everything"
by TJ Allen
- Price$9.99
- Reviews-
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Energy: The Invisible Currency: from the series "The Science of Everything"
by TJ Allen
- Price$9.99
- Reviews-
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The Science of Billiards and Pool (The Science of Everything Book 158)
by TJ Allen
- Price$9.99
- Reviews-
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The 45's of '59: Unusual trivia about all the charted songs of the year 1959 (The Yearly Top 100 Book 2)
by TJ Allen
- Price$9.99
- Reviews-
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The Last Issue: A Comically Accurate History of Magazines That Absolutely Knew What They Were Doing (Until They Didn’t)
by TJ Allen
- Price$9.99
- Reviews-
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Gravity: from the series "The Science of Everything"
by TJ Allen
- Price$19.95
- Reviews-
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Rear Windows: A Hitchcock Parody
by TJ Allen
- Price$9.99
- Reviews-
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The Soul of the Emerald Coast: Iconic History of Destin, Florida
by TJ Allen
- Price$28.95
- Reviews-
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The mp3's of 2019: More trivia about the Top 100 hits of your favorite songs of 2019 (The Yearly Top 100 Book 62)
by TJ Allen
- Price$9.99
- Reviews-
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50 Famous Southern Radio Stations
by TJ Allen
- Price$9.99
- Reviews-
Main categories
FAQ
How many books does TJ Allen have on Amazon?
KDPTop tracks 127 of their books; 16 made an Amazon list in the last 30 days.
Which categories does TJ Allen publish in?
Their books chart most often in Reference, Gravity, Energy.
How does TJ Allen price their books?
The median price is $9.99; half of the books cost $9.99–$12.99.
Has TJ Allen released new books recently?
3 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.