I did get an order of the Lamona a few years back.. as a substitute for another breed that didn't "meet hatch expectation". I ended up selling them to someone who was interested in showing.
My guess.. is that they weren't popular enough to sale at $100/chick regularly and turn a profit.. That coupled with limited genetic diversity making them much harder to work with.. or otherwise making more room for more popular and/or newer varieties instead of going on an ever increasing "growth" journey as many business oriented entities do..
That's too bad though.. I was possibly looking forward to trying them again.. for the cool red lobes and white eggs.