Just walked by today the Newtown D'Munchies store on King Street and saw a notice that its 2 for 1 Burgers on Tuesdays and its a regular event each Tuesday.
D'Munchies is on 170 King Street Newtown NSW, and its less than a year old. Looks like they have an interesting menu and marketing, also a nice vibe in the shop.
I noticed their poster the other day! Will try the burgers out soon!