Freak Show Collectable

A collectable that should hold no value due to looking very bad. However, due to either a popularity with collectors/fans, limited production, and/or the sheer novelty of it, it becomes very sought after. With prices being fairly high given how crappy the collectable is.

Person 1: Hey, do you still have that fast food toy that looks defective?
Person 2: Yeah, but it's become a freak show collectable now. I might sell it for $400 or more online.