Found these at Boxhill Officeworks, price tag showing $29 but scans at $18.
As you can see there are still a lot in stock, and stock is showing in quite a few more Officeworks as well.
Link to product: http://www.officeworks.com.au/shop/officeworks/p/mutant-mig-…
Amazon and Newegg still selling these for USD $38 Here and Here
Around 20 left at Elizabeth St Melbourne CBD. Bought one and returned it after 30 minutes trying. Mine has a bad buzzing sound and the noise cancelling does not work in office environment. Maybe just unlucky case but I hesitated to try again.