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Gerald R Allen: Amazon KDP author data
As of Nov 6, 2026, Gerald R Allen has 4 books on Amazon, 4 of them on a best-seller list in the last 30 days (best rank #5), mostly in Thailand, General, Fish & Sharks.
| Median price | $16.99 |
|---|---|
| Price range (middle 50%) | $15.86 – $17.34 |
| Median reviews | 44 |
| Total reviews | 166 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
Gerald R Allen's best-ranked books
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A Field Guide to Tropical Reef Fishes of the Indo-Pacific: Covers 1,670 Species in Australia, Indonesia, Malaysia, Vietnam and the Philippines (with 2,000 illustrations)
by Gerald R Allen
- Price$17.69
- Rating4.4
- Reviews76
- Published2020-08
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Field Guide to Tropical Reef Fishes of the Indo-Pacific: Covers 1,670 Species in Australia, Indonesia, Malaysia, Vietnam and the Philippines (with 2,000 illustrations)
by Gerald R Allen
- Price$14.74
- Rating4.4
- Reviews76
- Published2020-08
-
Reef Fishes of New Guinea: A Field Guide for Divers, Anglers, and Naturalists
by Gerald R Allen
- Price-
- Rating5.0
- Reviews1
-
Tropical Reef Fishes of Indonesia (Periplus Tropical Nature Guide)
by Gerald R Allen
- Price$16.99
- Rating4.4
- Reviews13
Main categories
FAQ
How many books does Gerald R Allen have on Amazon?
KDPTop tracks 4 of their books; 4 made an Amazon list in the last 30 days.
Which categories does Gerald R Allen publish in?
Their books chart most often in Thailand, General, Fish & Sharks.
How does Gerald R Allen price their books?
The median price is $16.99; half of the books cost $15.86–$17.34.
Has Gerald R Allen 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.