Not sure if people actually use these or have moved onto superior single bladed razors, but it's a pretty good price regardless for those who do.
$27.50 at Woolworths
$32.49 at Priceline
$27 at Big W
Note: There actually is a cheaper option for $14.49 with Free Delivery from a Seller called "Online Bargains" (86% Feedback) but I can't vouch for their products or service.
After their toxic masculinity ad, Gillette could reduce these to $1 and I still wouldn't buy them.