SVD, yeah, there are few problems with it. First you'd have to find an engraver who would agree to do such thing. Then you'd have to find a way to motivate the guy to do it.
Ray Cover has shared his experience on the video making and profiting from it. Wasn't that encouraging, at least not in that form.
Me, I was thinking of putting the videos up in the net for free and optionally offer cheap DVDs. But that's a topic to think about