There is a Daion Power Mark XX fretless on ebay.  I've never seen one of these fretless before.  The Power Mark XX guitar is IMHO, the finest production line guitar I've ever played.  I have two, along with several other Daion instruments.  A wonderful below-the-radar company that folded in the early '80's because they made their instruments too well for the money they charged.  I thought one of the low enders around here might be interested.   Here's the link.
 
Bill, tgo

I have this bass' fretted twin now. Man I sure wished you wouldn't have show me this Bill.  MM MM temptation man...temptation..