This is actually better than shoplifting because in some instances the stores actually pay you to take the stuff off their hands. It just takes a lot of work to figure out where you can accomplish that. If you don't want to keep the item yourself, which I guess you wouldn't, being a communist and all, you could always donate it to the needy and count the footwork as part of the donation.
For example, I got this for twenty-eight cents, which is...what, about the same in AUD?
There are also coupons this week that would enable you to get a glucometer for $1 (sending them to a free clinic) and various hygiene products for nothing or nearly nothing. I've had dental floss that cost less than the coupon for it, resulting in an "overage" I could use to pay for other things. There's a seasonings packet that's marked 77 cents, if you print out the dollar coupon and buy several of them there's a dollar in overage you can spend on something else right there.
It's effort-intensive, but it's also nice to walk off with a full cart of groceries for less than 20 bucks.