At least some (if not all) copies came with a bonus mini-comic.
Known printings (based on cover datestamp):
January 21, 1990
Cameos by the Checkered Demon, Mr. Natural and Trashman. Includes a two-page spoof of Harvey Pekar's American Splendor.
Generally speaking, Not Available printings beyond the 1st have a datestamp on the front or back cover which is the printing date of the batch that copy was from. Matt Feazell says those post-1st printings were usually 60 copies or fewer.
1st printing: July 1990 (Not Available Comics)
Other known printings:
August 1, 1990
United Fanzine Organization memberzine.
Published as a giveaway for the 1990 San Diego Comic-Con.
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