Out of print.
From the publisher:
In 1974, Gil Kane created Blackmark as a paperback series for Bantam Books. Kane was a comics artist specializing in superheroes who had drawn every major character from Superman and Spider-Man to Green Lantern and Conan. Blackmark was his attempt to go "independent" and create a series which he would own and whose creative direction he could control. The first volume of this sword-and-sorcery/heroic-fantasy narrative, designed and published in the paperback format, has been out of print for decades, and the completed second volume was never published. Fantagraphics Books is proud to collect both volumes in a single trade book format, larger than the original paperback size to better showcase Kane's elegant art.