There is currently an original drawing by Michael Hussar for sale on ebay. The drawing is being listed by Michael himself, or Birdbath Publishing to be correct, his sales and print house.
The drawing was made for the cover of Steve Niles and Rob Zombie's comic "The Nail".
It's 11" x 17" and looks very amazing. Its at a low price as I write this, but knowing his work that price won't last long.