Commonwealth Bank are doing $50 Cash back on new credit cards
If have a 'qualifying' loan or account they will give a discount so that their 'Low Fee' cards have no annual fee (for at least the first year, longer if you spend $1,000/$10,000 for gold), otherwise it's at least $24 (which is still a lower cost than the cash back if you cancel in the first year).
https://www.commbank.com.au/personal/credit-cards/preferenti…
If you are a student, their student card is also fee free for as long as you are a student.
Other cards are probably not worth the expense to get $50, unless you happened to want that card anyway.
Relevant T&Cs:
Things to know before you Can:
*Applications for finance are subject to the Bank's normal credit approval. Full conditions of use will be included in our Letter of Offer. Fees and charges are payable. Offer only applies to new credit card applications applied for online. Offer is available for a limited time and can be withdrawn at any time at the discretion of the Bank. Excludes Corporate credit cards, Business credit cards and existing credit card accounts. Cannot be used in conjunction with any other offer. To be eligible for the $50 cash back, you need to apply before 30th August 2013, and be approved by 30th September 2013. The cash back will be applied to your account within 60 days of activation. You will be ineligible for the $50 cash back if your account is closed, transferred or in default at any time prior to the cash back being credited to your account.
I had major effort getting CBA to honour a similar promotion recently.
Finally got the $50, but no explanation why i had to fight for it. Not worth the grief.
Unless you enjoy outsourced helpdesks telling you to email an address that you already told them never answers.
Thats if you are lucky and do not just get a form-letter reply.