I picked up a season 1 Metalocalypse from a thrift shop and it was dead. It’s such a gamble. Goodwill is getting really precious on their DVDs too - only really good deals if you find a season/box set that they haven’t broken up.
VHS seems more dependable, and VHS is dirt cheap. I got a pre-special edition Star Wars box set for $5, I got a season of MASH and Sergio Leone’s Dollars trilogy for $1 each. Lots of my local shops have $0.49 VHS bins.
Finding a VHS player can be a challenge. DVD players are super available, but I spent a month or so hunting for my current player. (The rewinders though - everywhere.)
Vinyl can also be found for pennies, but most of the good stuff is picked up quickly. If you are okay with mid jazz, classical music, and “greatest hits” compilations, the vinyl stacks are good to poke through.
I do like that all of my analog media is mine. No worries about it being pulled from streaming or altered or copyright weirdness - I can go back to 1998 and watch my Star Wars.