Regaine Men's Extra Strength Foam Hair Regrowth Treatment 4 x 60g Half price at Chemist Warehouse. Doesn’t seem to come up at this price very often.
The topical liquid 4 month pack is also on sale for $72.99:
https://www.chemistwarehouse.com.au/buy/68714/regaine-men-s-…
minoxidil works for some and not others it's just genetics.
This looks cheaper though https://www.chemistwarehouse.com.au/buy/40664/hair-a-gain-5-x-60ml-(5-months-supply)