Today's deal is a Mates Share Pack for $8 Includes 18 Chicken McNuggets and 2 Large Fries
Just to confirm it is 18 McNuggets according to this comment the push notifications said 24 McNuggets however in the app it says 18 McNuggets.
According to this comment by jv and this comment by gstfree the 18 McNuggets are in the form of 3 boxes containing 6 McNuggets in each box. Note: packaging seems to vary by store as according to this comment by gilbarc he/she received there nuggets in the one box instead of 3.
This would usually cost $12.45 for 20 McNuggets (According to Frugal Feeds McDonald's doesn't sell 18pc McNugget's so 20pc is the closest) and $6.70 for 2x Large Fries which means the usual price for all this is $19.15 which means your saving $11.15
Note: Prices vary depending on the store the items are purchased from.