You could have a look at the Poser Expo stuff. They are selling individual recordings from the webinar - around an hour long and then they are having master classes throughout the year

http://3dartlive.com/

I've seen Digital Lighting & Rendering by Jeremy Birn recommended in a bunch of places.

I know you're not looking for free vids but there is a good collection listed here: http://www.jurn.org/dazposer/?page_id=56 Maybe there will be something of interest?