MCDM were plagued with shipping issues for this product. I don't remember the specifics but it really was just unfortunate issue followed by unfortunate issue.
I believe most people received them a while ago though, I saw this book in a game store maybe 4-6 months ago I think.
Like the other user said, a raft of shipping issues.
For the Australian shipping specifically, they decided we'd be the lowest priority, so it would have arrived here last anyway. But then they got stuck in the shipping container for ages due to a backlog of some sort there.
It was shipping in September, sitting in the shipping container in that backlog still as of their last update on 26 Jan, at which point they estimated it would arrive at the Australian distributor's warehouse by 9 Feb to start fulfilment 19 Feb.