Quick story......
One of the best surf movies ever made is called "Free Ride" by Bill Delaney.
While almost every other surf movie ever made was ultimately available on DVD, this one was not, nor was it available in any other format - for many many years.
I happen to be a bit persistent when I'm "on the hunt" for something. And one day while doing a search on eBay, I found a seller with 3 copies for sale.....all in VHS format.
I bought every one right on the spot. Turned out they were the real deal. I ended up giving one away but still have the other two. I have yet to see this movie offered again in any format.
I've since made a couple copies to DVD and then a few months ago I see someone actually posted the entire movie on YT so I downloaded that to an MP4 file:
https://www.youtube.com/watch?v=bOXP8cklQJE
No idea what the value is for my VHS copies but I have no plans to sell them - just for the "cool factor" worth keeping!