Optus is giving credits for new cable customers. Guy came to my door but I jumped online and did it with chat
The page says up to $740 which is on their higher plans but I took the basic plan and got a $500 credit with my connection fees waived. It's $80 a month but I pay $60 as I have mobile with them so it's basically 8 months free unlimited internet and some calls.
Great value
I am with Optus (only because of the Premier League) but wouldn't recommend it to anyone, super unreliable speeds.(SYD)