I saw one last week end at a bluegrass festival in OR. A dealer wanted $550 for and didn't bat an eye. They have gone into the history books. I think the Gibson take over of Flatiron was about the same time they vanished. There are other small companys and builders building the little celtic style mandos. Celtic Cross, Missouri Mando Co. just to name a couple.
My guess is Gibson dropped the line to concetrate on the high dollar market.
Mudjack