Looks like Bunnings have reduced prices on some spirit levels which is a good deal if you don't want to buy the pack from Aldi.
Also on sale are:
Craftright 600mm Aluminium Spirit Level $5.98 (was $12.95) https://www.bunnings.com.au/craftright-600mm-aluminium-spiri...
Craftright 230mm Magnetic Torpedo Level $3.00 (was $3.25) https://www.bunnings.com.au/craftright-230mm-magnetic-torped...
Credit to Pricehipster.com