Spent the best part of 90 minutes trying, took me 35 minutes to get in the first time, but could not get 2 seats in any section (even though the site said there were seats available). Got in again after 70 minutes, could not buy a single seat anywhere, so I think the Sydney show sold out quick smart, even if the website still believes the concert not sold out.
Here is hoping to a second show, but probably more.