What chances are bigger?

Hey,
I would like to ask all of you about one method.
I wanna try the method with a dating site and redirecting people to some money making link...
I was wondering what link would be better - a PPD link or a Referral link where they would need to register?
PPD pays about 1$ for each and the Refferal links pays 100$ for each customer that buys a membership.

I think it is really obvious.

Well this seems to be a clear decision.

But if you choose the ppd you are guaranteed money, where as you cannot guarantee that ppl will register.
Since the difference in pay is big enough i say its worth any risk. Your only looking for 1% of your users to register with the site to equal as much money as you would get from the ppd.

1+1=2. Literally...come on, pretty obvious here.