Interesting, and seemingly well-researched, idea. My dad - who taught me golf - has been through a lot of 'training aids' already, and has sometimes shared them with me. Note - he's a ~12 handicapper and I play off around ~14.

I think the price point of 120USD for a club is entirely reasonable, in fact I was slightly surprised to see it so 'low'.

These days my Dad and I take golf a lot less seriously - and yet still somehow play just as well / badly as when we were trying harder - so I wouldn't personally support this campaign, however I bet many, many golfers would once the word is out a bit more.

Good luck to your friend and his dad. :)