If you want original art, you can e-mail
art@underworldlive.com or
sales@underworldlive.com and they should be able to hook you up.
The only print I know of is the Beautiful Burnout print, which you can probably still get here:
http://www.lorettahoward.com/exhibitions/underworld
The exhibition catalog is also a very nice presentation of Karl's exhibition. Not quite the same as prints, but still very nice. Plus you get the awesome Bungalow with Stairs album:
http://www.underworldlive.com/shop/m...ArID=1&AID=872