Just got back from Sydney... I found that the meat pies were sold in a lot of places, even at gas stations. But, they weren't labeled simply "meat pie"; they came in many flavors (or "flavours"), such as:
chicken
beef
vegetable
chicken w/vegetables
beef w/curry

Anyway, they make good snacks and are easy to eat (no fork or plate required). About 4in / 10cm diameter, double crust with no tin pan, they hold together well and aren't filled with soupy liquid like US pot pies.

Yum!