super sad, I tried building one about 16 years ago, attended their weekend class and was a plans owner. With a little one and another arriving soon, I sold my set (they are now almost grown). So sad to hear of end of Sonex and Mark's difficult situation.

Note: I'm always weary of kits which require custom (unobtanium) parts for completion - Sonex was one of them - their spar extrusions. People without a set will never complete their Sonexes now... :(