I agree with the overvalue. Another thing people do is grading a guitar from players grade to museum piece. I'd expect a guitar to been played and have some defects.Imo, people tend to totally overvalue their own stuff adding in what they paid, mods (that actually decrease value), nostalgia, other (unrelated) values, etc when selling instruments. Even if it's not the real greedy set, you can see where that ends up vs reality.
Then you add the times we're currently experiencing and the asking prices are reflective of that. Optimistic? Lunacy? Somewhere in between? Some sellers are simply uniformed to the street value of their stuff. Some just getting while the gettings good, so to speak.
Market decides prices most of the time.
Tldr: yep, used prices are still a bit high. Or I'm not high enough?
I've seen people purposely give the buckle rash to look "cool" and try to increase the value of the guitar because of it. So it's all up in the air with prices but there is a general limit.