Does this site need an SSL cert?

To view videos on this Site, we'll call Vsite, visitors select a link to paypal, from Vsite, to pay for credits. The credits are added to their Vsite account. They use the credits to view videos at Vsite. All payment transactions take place at paypal.
Does Vsite need an SSL certificate? Or is that overkill? I'm not sure what the benefit would be to have an SSL certificate in this case.
I look forward to being enlightened.

See original post by chrisj