Definitely illegal.
Having kept them (legally on another part of this planet) I can say that they make poor pets. I still bear the scars on my wrists from their claws. They have an awesome weaponry and know how to use it. They also use it on each other. During the long breeding season the inside of the enclosure was always covered in blood. The female to bite the male on the cheeks every time he made advances and he seemed to encourage this.
They do not make good pets.
That said I believe they are available illegally in Australia though I have not encountered them directly.