I honestly don't know why they would hold back on selling them now. Why let Myer have an early run at potential sales (albeit probably shelf warmer at the massive price)?
At Karingal, they were not particualrly well hidden away (in the kitchen section rather than the toy section) and were fully ticketed for sale. I'd be shocked if they wouldn't let me buy one (which I'll be trying to do tomorrow via lay by).