Blood for Dracula (1974)

Deathly ill Count Dracula and his slimy underling, Anton, travel to Italy in search of a virgin's blood. They're welcomed at the crumbling estate of indebted Marchese Di Fiore, who's desperate to marry off his daughters to rich suitors. But there, instead of pure women, the count encounters incestuous lesbians with vile blood and Marxist manservant Mario, who's suspicious of the aristocratic Dracula.