I'm also surprised they still made them. Only reason I can think of are non-adapters, maybe older people who don't want to get rid of their tube TVs and old tapes. I also know we have a working one mainly because my wife has an extensive collection of kids movies on video -- mostly Disney movies, some that are said to be valuable but who knows -- and sometimes the kids watch them.
We actually picked it up maybe a decade ago on the cheap thinking it would be about the last chance we had to grab one just in case. Those things look absolutely awful on today's TVs by the way.