There are a pair of DITKOMANIA covers up for auction on ebay right now.
One is the Dave Sim's cover for issue #77, which should be out this week, featuring Ditko's recent creation, The !?. Watch Sim ink the cover over at cerebustv.com (the 8 episodes run on a loop right now, so you might have to wait a while for that segment to come up. Hey, it's not my idea).
The second is Rodney Schroeter's cover to #11, from 1984, featuring Peter Parker, Betty Brant and various Spider-Man villains.
Details on subscribing to DITKOMANIA and getting back issues over here.