From ProgSoc Wiki
ProgSoc can accept payment either in cash or via bank transfer.
Membership for a calendar year costs $10.
This is basically a matter of turning up to one of the regular ProgSoc meetups at some point to see one of the people in the ProgSoc Executive. Make sure they write up a receipt for you, or else the fact that you paid may get forgotten. Before you come to the meetup, it might be a good idea to message us on Facebook or Twitter to make sure people are actually around.
By Bank Transfer
Using Internet banking, transfer the money to:
The Programmers' Society St George Bank Australia BSB 112 879 A/C 118 075 761
Then, when the system gives you a receipt, fill out the form linked to from this page, including the receipt in the "Receipt text" text box.