KDP categories · Top KDP authors
J. I. Wagner: Amazon KDP author data
As of Nov 6, 2026, J. I. Wagner has 9 books on Amazon, 9 of them on a best-seller list in the last 30 days (best rank #1), mostly in Mystery & Detective, Canada, Etiquette.
| Median price | $11.47 |
|---|---|
| Price range (middle 50%) | $11.17 – $11.62 |
| Median reviews | 581 |
| Total reviews | 14,410 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $11.47, 18% above the median of their main category, Mystery & Detective.
J. I. Wagner's best-ranked books
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Timmi Tobbson Big Boxed Set: Solve-Them-Yourself Picture Mystery Adventures for Boys and Girls aged 8-12 (Books 1-3)
by J. I. Wagner
- Price$40.97
- Rating4.8
- Reviews581
-
The Shadow and the Golden Room: A Timmi Tobbson Junior (6-8) Detective Book for Kids (Solve-Them-Yourself Mysteries Book for Girls and Boys ages 6-8) (cover may vary)
by J. I. Wagner
- Price$10.17
- Rating4.8
- Reviews276
-
Secrets of the Last Pirate: A Timmi Tobbson Adventure Book for Boys and Girls
by J. I. Wagner
- Price$11.62
- Rating4.8
- Reviews203
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A Christmas Mystery: A Timmi Tobbson Junior (6-8) Christmas Book (Solve-Them-Yourself Mysteries Christmas Book for Girls and Boys Age 6-8) (cover may vary)
by J. I. Wagner
- Price$11.41
- Rating4.7
- Reviews172
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Legend of the Star Runner: A Timmi Tobbson Adventure Book for Boys and Girls (Solve-Them-Yourself Mysteries for Kids aged 8-12)
by J. I. Wagner
- Price$9.84
- Rating4.7
- Reviews5,327
-
The Missing Necklace: A Timmi Tobbson Junior (6-8) Book for Kids (Solve-Them-Yourself Mysteries Book for Girls and Boys age 6-8) (cover may vary)
by J. I. Wagner
- Price$11.17
- Rating4.8
- Reviews395
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Legend of the Star Runner: A Timmi Tobbson Adventure Book for Boys and Girls - with Solve-Them-Yourself Mystery Puzzles. The reader is the detective. (Activity Book for Ages 8-12)
by J. I. Wagner
- Price$11.49
- Rating4.7
- Reviews5,327
-
A Family Secret: A Timmi Tobbson Junior (6-8) Children's Detective Adventure Book (Solve-Them-Yourself Mysteries Book for Boys and Girls age 6-8) (cover may vary)
by J. I. Wagner
- Price$11.99
- Rating4.7
- Reviews825
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Legacy of the Inventor: A Timmi Tobbson Adventure (Solve-Them-Yourself Mysteries Book for Boys and Girls 8-12)
by J. I. Wagner
- Price$11.06
- Rating4.8
- Reviews1,304
Main categories
FAQ
How many books does J. I. Wagner have on Amazon?
KDPTop tracks 9 of their books; 9 made an Amazon list in the last 30 days.
Which categories does J. I. Wagner publish in?
Their books chart most often in Mystery & Detective, Canada, Etiquette.
How does J. I. Wagner price their books?
The median price is $11.47; half of the books cost $11.17–$11.62.
Has J. I. Wagner released new books recently?
0 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.