Sarabande Porno (Catalog Sex Slaves) (1977)

Philippe & Jean-Pierre enjoy the companionship of several women who's services they have willingly purchased from a female auction. Each time they are unsatisfied with one, they simply return her to the auction and bid on a new one. After a while both men decide to put themselves out to stud, and are purchased as a pair by rich Emmanuelle Paréze.