KDP categories · Top KDP authors
Roy Martina: Amazon KDP author data
As of Nov 6, 2026, Roy Martina has 4 books on Amazon, 4 of them on a best-seller list in the last 30 days, mostly in Mental & Spiritual Healing, Health & Family, Personal Development & Self-Help.
| Median price | - |
|---|---|
| Price range (middle 50%) | - |
| Median reviews | 352 |
| Total reviews | 1,170 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
Roy Martina's best-ranked books
-
Dimagrire nel sonno: Il metodo efficace e semplice per avere un corpo sano e giovane (Italian Edition)
by Roy Martina
- Price$0
- Rating3.5
- Reviews446
- Published2016-05
-
Omega Healing: Il metodo per una vita lunga e sana (Italian Edition)
by Roy Martina
- Price$0
- Rating4.0
- Reviews355
- Published2016-10
-
Viaggi Quantici (Italian Edition)
by Roy Martina
- Price$0
- Rating3.7
- Reviews348
- Published2018-08
-
Omega Healing (update English Edition): The new healing system
by Roy Martina
- Price$0
- Rating3.8
- Reviews21
- Published2016-09
Main categories
FAQ
How many books does Roy Martina have on Amazon?
KDPTop tracks 4 of their books; 4 made an Amazon list in the last 30 days.
Which categories does Roy Martina publish in?
Their books chart most often in Mental & Spiritual Healing, Health & Family, Personal Development & Self-Help.
Has Roy Martina 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.