Sin with a Discount (German: Sünde mit Rabatt) is a 1968 West German crime drama film directed by Rudolf Lubowski and starring Claus Holm, Rolf Wanka and Adrian Hoven. It was part of a growing trend towards lower-budget exploitation films in German cinema of the era.
Martina one of the prostitutes who works at the Apollo, a strip club and brothel, is discovered murdered in the woods outside the city. Kriminalkommissar Weber takes on the case and at first suspects her pimp, but he proves to have an alibi. Meanwhile alarm grows amongst the woman of the Apollo who fear they will be next.