Today, a friend showed me a few sets of MU cards. It looks, at first glance, that he has complete 91, 92, and possibly 93 sets. He says he has holograms for the first two sets. I did a Yahoo search and found no useful information. The cards I saw had been kept mint on those three-hole pages with pockets.
I did an eBay search and got no useful information. I didn’t get home until after the comic store I go to had closed.