I have about 70 of these from the baseball set. I am not sure if others found this but they do get / show wear on them quite easily. I did not buy packs but got them from someone's collection so it may be the way he took care of them (or not).
I will entertain trades but please don't offer me a 1993 Dave Stieb for a Nolan Ryan rookie. I prefer player for player (at least similar era and similar stardom).