I would add that 12 piece is on the money about it being a premium service. I can go to any number of golf forums and stick up a bunch of swings and get feedback, most of it useless.
I would suggest that the instructor determines exactly what he wants to see and the student films it. The instructor then gives feedback and makes a suggestion towards improvement.
In this format I could be interested but at a price that would reflect the minimal time and effort the instructor needs to put into it.
I'm not at all interested in an open forum section where any 'wannabe' instructor can throw his two cents in the ring.
__________________ The student senses his teacher’s steadfast belief and quiet resolve: “This is doable. It is doable by you. The pathway is there. All you need is determination and time.” And together, they make it happen.