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Gerardo Castro Albarran: Amazon KDP author data
As of Nov 6, 2026, Gerardo Castro Albarran has 12 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #9), mostly in Derecho, Law, Criminal Law.
| Median price | $6.12 |
|---|---|
| Price range (middle 50%) | $5.75 – $7.29 |
| Median reviews | 1 |
| Total reviews | 3 |
| New listings (30 days, incl. new editions) | 8 |
| Breakout books (30 days) | 5 |
What stands out
- 67% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $6.12, 39% below the median of their main category, Derecho.
- 8 new listings in the last 30 days (new editions included), 5 of them broke into a Best Sellers list.
Gerardo Castro Albarran's best-ranked books
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INVESTIGAR, DETENER Y ARGUMENTAR: Investigación penal, audiencias, juicio y control constitucional (Spanish Edition)
by Gerardo Castro Albarran
- Price$5.92
- Reviews-
- Published2026-10
-
EL ABC DEL POLICÍA: Ciencia, inteligencia y método para decidir y actuar en la calle (Spanish Edition)
by Gerardo Castro Albarran
- Price$6.99
- Reviews-
-
UMBRAL: Tres colores para decidir en la calle (Spanish Edition)
by Gerardo Castro Albarran
- Price$5.99
- Rating5.0
- Reviews1
- Published2026-09
-
TÉCNICAS Y TÁCTICAS DE INVESTIGACIÓN POLICIAL: Una metodología integral de pensamiento, actuación, investigación y dirección policial (Spanish Edition)
by Gerardo Castro Albarran
- Price$6.25
- Reviews-
-
La Soberanía de Morir: Ensayo filosófico-jurídico sobre autonomía, dignidad y el derecho a decidir el final de la existencia (Spanish Edition)
by Gerardo Castro Albarran
- Price$11.33
- Reviews-
-
Análisis y Procesamiento de la Información Policial: Método para transformar datos en inteligencia, decisiones y resultados operativos (Spanish Edition)
by Gerardo Castro Albarran
- Price$5.26
- Rating5.0
- Reviews1
-
Análisis y Procesamiento de la Información Policial: Método para transformar datos en inteligencia, decisiones y resultados operativos (Spanish Edition)
by Gerardo Castro Albarran
- Price$5.26
- Rating5.0
- Reviews1
-
EL SISTEMA ÁRBOL: Una novela sobre los límites de un mundo que puede anticipar (Spanish Edition)
by Gerardo Castro Albarran
- Price$8.17
- Reviews-
-
THE ABC OF POLICING: Science, Intelligence, and Method to Decide and Act on the Streets
by Gerardo Castro Albarran
- Price-
- Reviews-
- Published2026-09
-
EL SISTEMA ÁRBOL: Una novela sobre los límites de un mundo que puede anticipar (Spanish Edition)
by Gerardo Castro Albarran
- Price$0
- Reviews-
- Published2026-09
Main categories
FAQ
How many books does Gerardo Castro Albarran have on Amazon?
KDPTop tracks 12 of their books; 8 made an Amazon list in the last 30 days.
Which categories does Gerardo Castro Albarran publish in?
Their books chart most often in Derecho, Law, Criminal Law.
How does Gerardo Castro Albarran price their books?
The median price is $6.12; half of the books cost $5.75–$7.29.
Has Gerardo Castro Albarran released new books recently?
8 new books in the last 30 days, 5 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.