I think they are considered rare although its so rural out here, everything is rare. I still would like to try Lithops but I would have to order them in line. And yes, these odd succulents are temperamental, I am learning fast these guys are fussy!Indeed! Don't know how rare they are in the US, but over here I can't find them anywhere but the plant expo. Lithops, astrophytum and gymnocalycium will be what I keep adding to my collection, I think. Maybe an odd one out here and there
My research tells me that these guys are more temperamental, but I'm up for the challenge