Not sure about the end date, please let me know so I can update it. Possibly nationwide. Other Cadbury varieties are on discounts too.
other states ?
Got Cadbury for 75% off: 50% discount on the shelf and somehow they added additional 50% off the discounted price at the self-serve checkout. Could be a pricing error though.
Tried at top Ryde NSW, doesn't work, only comes down to $2.30 for old gold and $3.30 for normal blocks