There's a few 5 packs of seed on eBay, and I found one or 2 live plants there, about $40 each, and look pretty small, the seller has good reviews but I've always avoided them for several reasons, over priced, reselling plugs from wholesale suppliers, and generally not the best looking plants, their Chilean bellflower looks ok, I guess, I'm not experienced with that plant.
It seems they are in peril in their native range.
Edit
http://www.tomorrowsplants.com...
Looks like they stock them too but are overseas
