Just been in to buy a case of Tooheys at my local BWS (Which was a bargain anyway $40 for 30 cans) and they had these caps for sale on the counter for just $5
They have all the official tags and usually retail for around $30
The store i got it from was BWS Surfers Paradise Hanlan St, i'm fairly certain others would have this too due to them having all the printed out gear promoting it.
Nice! Will try Oxenford tomorrow.