Found an offer in my mymacca's app for $2 Big Mac (they normally sell for about $6) however you have to use the app to place your order to use the voucher. You can't scan/enter the code at the touch screen kiosk or present at the counter for this one. Says it expires in 6 days.
Most likely targeted.
Thanks to melbourne guy for title and description 😄
$4 in mine. Last week I had it for $2. So should be targeted