The above on the First Choice website says $20 or $19 (in order of 6) and the listing clearly states the price is for four cans ("Price Per 4 x 250mL Cans."). When you add it to the cart, only $10.52 is charged. Possible Price Error
Also works for the Moscato Rose … https://www.firstchoiceliquor.com.au/sparkling/brown-brother...
If Click & Collect in order use code BONUS1K for an extra 1000 Flybuys points on orders over $20.
Also, some people might have the AMEX $10 cashback deal for purchases over $100 as posted here … https://www.ozbargain.com.au/node/497486
Shopback looks to currently have 12% cashback.
I have never tried these, so no idea if it is nice.