@TPDELARAY,
He's not interested about the money, let's face it, $50 doesn't buy you much..He's interested in having two women go down on him, consequently, he's also not thinking logically of the future, that movie, maybe being deliberately used against him, let's just say hypothetically, by the girl he knows, to his future wife, or he keeps a copy and his daughter, finds it years later.
Or he becomes famous, highly un-likely, just saying...And, it bites him in the bum, headlines.
If none of that bothers him and you've pointed everything out...Then, it's not your call.
Although you could suggest that as he knows the girl, he backs out of it but they can use him, as role play....
Then he gets his fantasy without it ever been seen in the future.....