I cannot disclose any specific numbers but they are less than half
We are selling pay by the minute or pre paid packages of credits -- for cams on demand. VOD would be similar (I suppose).
A flat rate pay site is another proposition entirely.
Hard to say based on empirical evidence for me.
I think a lower price-point
might help. Maybe, a first time introductory deal. If the added volume justifies the price point. There needs to be a 'porn wallet' especially for mobile use. A pre-paid account that is portable site to site -- this would help out a lot IMHO. A OAuth merchant pay page -- ease of access and favorable price point.
You would have to look at your mobile customer churn rate to determine the fair customer acquisition commission to pay out. I don't have those pay site specific numbers ...
This is why to my thinking Tablets are a much better market than phones. Tablet users are spending a lot more money online than mobile phone users in general (on a per user basis) this is what I have seen from what I read in Forester and other industry sources.
People check things out on mobile phones and come back to buy on tablets and PCs a lot. So, I think mobile is a branding and marketing tool as well as a user (subscriber - payor) method.