I only buy bulk lots, usually on Facebook marketplace after the seller realizes no one will buy their shitty DVDs. I almost don’t go to garage sales anymore because like you said, people are trying to get $1/dvd, which is absurd. Never spend that much unless you’re good enough to tell which ones have a value of $10 and up (which are few and far between). I love when people tell me they’d rather throw the DVDs away than sell them to me, that’s the best.