ALL DEALS are on US PSN STORE
Need to buy Amazon PSN cards or US paypal account
Tomb Raider Definitive Edition at 7.50 USD which is around 11 AUD
Sleeping Dogs™ Definitive Edition at 10 USD which is around 14 AUD
Far Cry 4 at 19.8 USD which is around 28 AUD
Thief at 7.50 which is around 11 AUD
If you are unable to access the deals page, then you might need to create a US PSN account or visit the link in private mode or after logging out of AU PSN account
Better deals in Canadian store recommended by clarenix0813, details below
Good deal, but Let me propose a "slightly better" way to take advantage of this deal.
As of now, PSN canada store is having the same weekly sale, (well sort of)
I suggest buying canadian psn cards from amazon or from here(pcgamesupply.com) they are legit, tried them, and of course you have to have a canada psn account.
Note that CAD is just Slightly over AUD whereas 20 CAD PSN is just 20.23 AUD
Tomb Raider DE 8.25 CAD Cheaper
Thief 8.25 CAD Cheaper
Sleeping Dogs DE 12.5 CAD Cheaper
FC4 23.10 CAD 30 CAD for Gold Edition Cheaper as well.
Off topic but fc4 and tomb raider on sale for xb1 also.