As a South Australian, believe me the effect on family budget is negligible. OK the bottle cost is included at purchase, but you get it back if you're sensible and return containers to recycling depots.
As an experienced driver for over 60 years, I would give the same answer which I remain convinced is the correct one. What answer was given by the testing body?
I drink a mug of black unsweetened tea morning and night and am marginal type 2 diabetic. I also usually have a flat white unsweetened coffee midday or afternoon.
I once tried haggling at Myers over a watch price, and nearly won until the salesperson jacked up and objected to my doing so: "You can't do that here!"
I have raised a couple of issues with the Reserve Bank lately querying apparently forgotten rules from when cards were first introduced, but can't get a straight answer. Merchants were advised that the fees banks charged them should be regarded as tax-deductible insurance premiums to guard...
You have to memorise size v. price on multiple products. I would never pay $6 for chocolate (don't like milk varieties anyway). Darrell Lea when $2.75, Coles Belgian $2.30.
I shop by advertised specials only and have almost reached $100 at a single supermarket lately, with $20 to $60 in top-ups at others, and that just for two of us. Then there's petrol....
I hate being barefoot. Apart from any other consideration, it's downright dangerous, courting possible injury, not to mention a lack of pedal control when driving. I always wear shoes, or sandals, depending on weather, with socks.
SA has had a container deposit scheme for donkey's years, so long I've no idea whether purchase prices are affected. Very effective with bottle depots all over the place. Includes cardboard containers as well as plastic and glass, but not wine bottles nowadays although they used to fetch 1c.
I walked out of a Coles store yesterday because of this, leaving my loaded trolley behind. Spoke to the manager on the way out, telling him what I thought. His reply was "there is nothing we can do about it". Another nearby Coles still using serving checkouts then got my business.
I've always regarded QR codes are useless unnecessary things and never use them, let alone understand them. Should be consigned to the file of failed historical devices!