Overcharging your clients is a serious crime in Germany:

62-year-old Helge Achenbach was sentenced to six years in prison after judges of the court in Essen on Monday found him guilty of cheating his wealthy customers.

Achenbach was considered the networking wizard and powerbroker of the German art scene until his arrest on June 10, 2014 when he was returning from Brazil after decorating the living quarters of the German football team with his choice of artworks. He has been in police detention since then.

Earlier in January, the regional court in Germany’s western city Düsseldorf had found Achenbach guilty of overcharging his client, the late Berthold Albrecht, the heir of the Aldi supermarket chain.

German art dealer Achenbach sentenced to six years in prison