But for folks searching for early appearances of the character to collect, they are going to have a struggle.
The multi-dimensional psychedelic adventurer first appeared in Brainstorm Comix #3 in 1976, retitled Mixed Bunch, with The Papist Affair. It recently sold on eBay for $15.
Before jetting over to Near Myths for five issues (alongside heavily-influenced-by-Talbot Grant Morrison) a recent issue of which sold for $8.
Before continuing in the avant garde UK magazine pssst! from issues 2 to 10.
There was a four pager Arkwright story in Moon Comics #3 from 1979 and two pages in Imagine #14 from TSR.
All these were reworked and published in the nine issue series The Adventures Of Luther Arkwright from Valkyrie Press, with a tenth issue addendum featuring a Neil Gaiman poem. The nine issue set recently sold for $10 on eBay. Most of this was collected in a trade paperback and then the series remastered and republished by Dark Horse Comics in the US, beginning the publisher's long relationship with the creator.
Before they published the second volume, Heart Of Empire. So, whether the rumours are true… happy hunting!