Catarina Migliorina’s chastity made $780,000 at auction last week. But why did a man’s virginity sell for just $3,000, asks Caroline Delaney

A Brazilian student has sold her virginity in an online auction for $780,000 (€600,000) as part of a documentary organised by an Australian filmmaker, although a man who did the same only fetched $3,000 (€2,300).