Posting here because I thought the OzHorde would be pissed if I posted as a deal.
Found the Maccas cheese toastie was free in the app and I ordered it. Note: You can't order a zero dollar item in the app so I ordered this mexican maccas sauce as well for 50c.
Pic of price: https://imgur.com/crt3Upd
They're in the Snacks section.
After I ordered it I went to the counter and they called my name. They told me they don't sell the toastie anymore and offered me a cheese and ham wrap which I accepted. Then they told me they don't do the sauce anymore lol so I got mayo instead.
Not bad for 50c. Good luck.
Showing $3 in the app for me. What location did you order it at?