I don't think filesonic pays for rebills/renewals but there' are things that most people overlook.
Filesonic charges in dollars for premium accounts while oron charges in euros. That makes it harder to get sales with oron because a primium account will cost ~14.50 dollars using current exchange rates.
Some users complain that sales dropped when oron changed to euros.
Another issue, maybe also important, is content availability. With oron, members will only find porn while it is easy to find the latest music and movie realeases on filesonic.
This is more for your buck.
So from my personal expereince, it is easier to sell filesonic accounts, unless you have something unique, really hard to find.