Thanks for that - it looks like they have closed it early, so I've marked it as closed.
I just had a quick look, and the only other current competition on their website appears to be this one (prize location is NSW though):
Win one of 10 double passes to John Russell: Australia’s French Impressionist now on at the Art Gallery of NSW.
Entries will close at 11.59pm AEST on Sunday, September 16 and winners will be notified Monday, September 17.
https://www.schwartzmedia.com.au/tmt-giveaway-agnsw-john-russell-exhibit/
The link is broken for me. Does anyone have the page in which to enter?