I realized something similar after working in auto parts for a few years. Not sure about now as I don't really buy them anymore, but at the time there was a cl

I realized something similar after working in auto parts for a few years. Not sure about now as I don't really buy them anymore, but at the time there was a clear difference in quality between the cheapest of the cheap and the normal items (reman alternators, brake pads, etc.) Even though I tried to steer people away from the known questionable quality stuff (for no benefit of my own, not on commission), 95% of people would get it anyways. For the same reason "oh, I'm thinking of selling it soon anyways." And they rarely actually seemed to, based on my memory, but they had that mindset. Glasses are perhaps more 'timeless', but I could see them not selling well at a premium because of the 'ephemeral' mindset of potential life and style changes.