Hello fellas, quick question cuz I have little time to think about it. I can buy 5 books, 2nd handed for Euro 30:

The Mexican Mafia (T. Rafael)
The Japanese Mafia (P. Hill)
Drug Lords (R. Chepesiuk)
The Rise and Fall of the Cleveland Mafia (R. Porello)
Tongs, Gangs and Triads (P. Huston)

Are these books worth buying/reading?

Thanks!