I can remember when I was working on my undergrad around 2004, I walked into a shop near my local college and the kid at the counter was buying NES games for the store, and then re-buying them from the store to start his own inventory. At the time I thought that was weird because most Nintendo NES games we're DIRT cheap back then. He was convinced they we're going to go up in price substantially over time. 19 year old me scoffed at him. Surely this dude had no idea what he was doing.
19 year old me was an idiot lol : )
Just as he predicted, prices went up shortly thereafter.