KDP categories · Top KDP authors
Joel Shepherd: Amazon KDP author data
As of Nov 6, 2026, Joel Shepherd has 29 books on Amazon, 1 of them on a best-seller list in the last 30 days (best rank #1), mostly in Space Fleet, Galactic Empire, Science Fiction.
| Median price | $5.99 |
|---|---|
| Price range (middle 50%) | $5.99 – $5.99 |
| Median reviews | 653 |
| Total reviews | 34,074 |
| New books (30 days) | 1 |
| Breakout books (30 days) | 1 |
What stands out
- Only 3% of the catalog charted in the last 30 days; sales rest on a few titles.
- Median price $5.99, 20% above the median of their main category, Space Fleet.
Joel Shepherd's best-ranked books
-
Tavalai Rebellion: (The Spiral Wars Book 11)
by Joel Shepherd
- Price$5.99
- Rating4.6
- Reviews29
- Published2026-10
-
Renegade: (The Spiral Wars Book 1)
by Joel Shepherd
- Price$0
- Rating4.5
- Reviews4,790
-
Drysine Legacy: (The Spiral Wars Book 2)
by Joel Shepherd
- Price$5.99
- Rating4.6
- Reviews3,998
-
Kantovan Vault: (The Spiral Wars Book 3)
by Joel Shepherd
- Price$5.99
- Rating4.5
- Reviews3,361
-
Defiance: (The Spiral Wars Book 4)
by Joel Shepherd
- Price$5.99
- Rating4.6
- Reviews3,353
-
Croma Venture: (The Spiral Wars Book 5)
by Joel Shepherd
- Price$5.99
- Rating4.6
- Reviews2,887
-
Rando Splicer: (The Spiral Wars Book 6)
by Joel Shepherd
- Price$5.99
- Rating4.6
- Reviews2,696
-
Qalea Drop: (The Spiral Wars Book 7)
by Joel Shepherd
- Price$5.99
- Rating4.6
- Reviews2,236
-
Ceephay Queen: (The Spiral Wars Book 8)
by Joel Shepherd
- Price$5.99
- Rating4.6
- Reviews1,765
-
Homecoming: (The Spiral Wars Book 9)
by Joel Shepherd
- Price$5.99
- Rating4.6
- Reviews1,365
Main categories
FAQ
How many books does Joel Shepherd have on Amazon?
KDPTop tracks 29 of their books; 1 made an Amazon list in the last 30 days.
Which categories does Joel Shepherd publish in?
Their books chart most often in Space Fleet, Galactic Empire, Science Fiction.
How does Joel Shepherd price their books?
The median price is $5.99; half of the books cost $5.99–$5.99.
Has Joel Shepherd released new books recently?
1 new book 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.