I don't know why they are expensive except they are not the sort of animals you see a lot of and we were looking for 3 years to find some, we were just lucky these 2 came up when they did.
Took mum out yesterday and put her back in the pit and not long after dad came out who we havent seen since we took mum inside. Gave the bubs their first feed and they got stuck into it checked their bowl this morning all gone, so they are eating well.