Well, I recently looked into getting a player and find that most of the time, they still go for a lot on ebay, especially the high end ones.
If you search youtube, you can find a lot of people who talk about their laserdisc collection. I suspect lots of people buy the discs because they are pretty affordable now and a cool experience. I mean wasn’t the Definitive Collection $250 USD back then?
If you’re interested in doing captures, it might be useful to get really high quality rips of the 1993/1995 Star Wars extras. Or THX 1138 if someone hasn’t done that already on an X9. Or anything else that was exclusive to laserdisc.