Thanks for the info.
I remember back in 1986 being offered the original manuscript version of "Ghost Wheel" with corrections by Roger including an argument with the editor about renaming it "Trumps of Doom". I wasn't able to sell my car fast enough and it went to another collector.
I've also provided some of the fanzine stories and poems to a Zelazny fan on ebay who is attempting the same feat as DNA and Wildeside press. He goes by name of devilsadvocate and is very motivated to bring more Roger to his fans.