KDP categories · Top KDP authors
Ralph Helfer: Amazon KDP author data
As of Nov 6, 2026, Ralph Helfer has 8 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #1), mostly in Animal Rights, Theater, Circus.
| Median price | $9.74 |
|---|---|
| Price range (middle 50%) | $8.90 – $23.59 |
| Median reviews | 2,498 |
| Total reviews | 13,286 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 88% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $9.74, 35% below the median of their main category, Animal Rights.
Ralph Helfer's best-ranked books
-
Modoc: True Story of the Greatest Elephant That Ever Lived — A True Elephant Story Spanning Three Continents
by Ralph Helfer
- Price$7.99
- Rating4.6
- Reviews2,500
-
Modoc: The True Story of the Greatest Elephant That Ever Lived
by Ralph Helfer
- Price$9.20
- Rating4.6
- Reviews2,500
- Published1998-08
-
Modoc: The True Story of the Greatest Elephant That Ever Lived
by Ralph Helfer
- Price$22.79
- Rating4.6
- Reviews2,496
-
Zamba: The True Story of the Greatest Lion That Ever Lived – A Hollywood Story of Love, Affection Training, and an Eighteen-Year Bond
by Ralph Helfer
- Price$9.99
- Rating4.7
- Reviews395
-
Zamba: The True Story of the Greatest Lion That Ever Lived
by Ralph Helfer
- Price$9.49
- Rating4.7
- Reviews395
-
Judy: The Greatest Chimpanzee That Ever Lived
by Ralph Helfer
- Price$25.99
- Rating5.0
- Reviews2
-
The World's Greatest Elephant
by Ralph Helfer
- Price$6.29
- Rating4.6
- Reviews2,500
-
Modoc: The True Story of the Greatest Elephant That Ever Lived
by Ralph Helfer
- Price$41.49
- Rating4.6
- Reviews2,499
- Published2019-09
Main categories
FAQ
How many books does Ralph Helfer have on Amazon?
KDPTop tracks 8 of their books; 7 made an Amazon list in the last 30 days.
Which categories does Ralph Helfer publish in?
Their books chart most often in Animal Rights, Theater, Circus.
How does Ralph Helfer price their books?
The median price is $9.74; half of the books cost $8.90–$23.59.
Has Ralph Helfer 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.