You'll be able to pay for your campaign at the end of the campaign creation process when you review and pay, you can find more information here.

If you've already paid for a previous campaign your card details will be saved in your profile or you can add new card details. To add or remove card details you can find this here.

Nine Ad Manager supports payment by debit or credit cards through our secure payment provider Stripe, and many major credit card providers are supported.

Payment and Credit Card details are not saved by Nine.