Pirie Sparkling NV is $28.50 at Dan Murphy and has good reviews. Huon Hooke who is well-respected gives it 95 points:
With a light-straw colour, this exemplary non-vintage style has a complex cracked-yeast bouquet and is clean and full of character, thanks to some older reserve wine in the blend. It is rich and full of flavour, yet also refined and well balanced, with a soft but refreshing finish. 12 per cent alcohol.
Trophies - Best Australian Sparkling over 15 Pounds - Decanter Awards London 2016, Best Non-Vintage Sparkling Wine - Tasmanian Wine Show 2016, Best Wine of Show - Tasmanian Wine Show 2016, Best Sparkling - The Reidel Australia 2015. Gold Medal - Royal Melbourne Wine Awards 2015
If you have the Cellarmasters $50 off $120 Amex off you can stack with the 50YELLOW code posted by altomic to bring it down to a bargain $12.52 with free delivery.
Not actually a sparkling drinker myself but I've bought 6 to have on hand for gifts.
You can try for cashrewards (8.8%) but I suspect won't work with the 50YELLOW code - it hasn't worked for me with similar codes.
The 50YELLOW deal you linked to is marked as expired