Hello,
this is an Australian species. Exporting new animal-species from Australia can be next to impossible, especially roaches, because not many people are interrested im them. As far as I know, they have never been in culture. You would need to find someone who has an export licence for these. I heard that you are allowed to export animals from Australia if you breed them for 3 generations, but I have no source for that. So IF someone would be able to export some, it is my concern that they get into hands of expierienced breeders first to get them going. I myself would love to see Polyzosteria, among other Australian species, in culture. But we are lucky to have have Macropanesthia rhinoceros.