Not sure if this needs to be changed so other can add there codes but deal dosent seem to be listed so I will start.
Reamped Energy Refer a Friend both get $50 Credit. I just joined (no credit as wasn't on ozbargain :( )
They seem to be cheapest from my research (on 4 Sydney addresses) and often the cheapest from comparison websites.
Ohh remember to select the "ReAmped Handshake" plan if available as it cheaper and no real contract (no fees to leave) its a "handshake agreement" LOL
Mod: Referral codes not permitted anywhere on OzBargain other than the referral system below.