KDP categories · Top KDP authors
John Grehan: Amazon KDP author data
As of Nov 6, 2026, John Grehan has 21 books on Amazon, 18 of them on a best-seller list in the last 30 days (best rank #11), mostly in Pictorials, Naval, Philippines.
| Median price | $14.99 |
|---|---|
| Price range (middle 50%) | $3.99 – $19.99 |
| Median reviews | 17 |
| Total reviews | 551 |
| New books (30 days) | 2 |
| Breakout books (30 days) | 1 |
What stands out
- 86% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $14.99, 88% above the median of their main category, Pictorials.
John Grehan's best-ranked books
-
Saipan 1944: The Most Decisive Battle of the Pacific War (Images of War)
by John Grehan
- Price$1.99
- Rating4.6
- Reviews73
-
The Zulu War: The War Despatches Series (Despatches from the Front)
by John Grehan
- Price$0.99
- Rating4.4
- Reviews23
-
Corregidor: Siege & Liberation, 1941–1945 (Images of War)
by John Grehan
- Price$8.99
- Rating4.5
- Reviews22
-
The Royal Navy and the War at Sea, 1914–1919 (Despatches from the Front)
by John Grehan
- Price$14.99
- Rating3.9
- Reviews6
-
Great Naval Battles of the Pacific War: The Official Admiralty Accounts: Midway, Coral Sea, Java Sea, Guadalcanal & Leyte Gulf
by John Grehan
- Price$25.99
- Rating4.5
- Reviews14
-
The Doolittle Raid: The First Air Attack Against Japan, April 1942 (Images of Aviation)
by John Grehan
- Price$11.99
- Rating4.6
- Reviews61
-
Operations in North Africa and the Middle East, 1939–1942: Tobruk, Crete, Syria and East Africa (Despatches from the Front)
by John Grehan
- Price$17.99
- Rating4.2
- Reviews5
-
British Battles of the Napoleonic Wars, 1793–1806: Despatches from the Front
by John Grehan
- Price$2.99
- Rating4.4
- Reviews17
-
The Charge of the Light Brigade: History's Most Famous Cavalry Charge Told Through Eye Witness Accounts, Newspaper Reports, Memoirs and Diaries (Voices from the Past)
by John Grehan
- Price$3.99
- Rating4.5
- Reviews43
-
The Battle of Barrosa: Forgotten Battle of the Peninsular War
by John Grehan
- Price$14.99
- Rating4.2
- Reviews14
Main categories
FAQ
How many books does John Grehan have on Amazon?
KDPTop tracks 21 of their books; 18 made an Amazon list in the last 30 days.
Which categories does John Grehan publish in?
Their books chart most often in Pictorials, Naval, Philippines.
How does John Grehan price their books?
The median price is $14.99; half of the books cost $3.99–$19.99.
Has John Grehan released new books recently?
2 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.