As usual, you can buy iTunes card with Woolworths eGift card (with 5% off from e.g Cash Rewards website) giving you close to 20% discount.
15% off App Store & iTunes Gift Cards†
May not be available in all stores. Colours, sizes and styles may vary by store. While stocks last.
†15% off $30, $50, $100 App Store & iTunes Gift Cards. Limit of 10 Cards per Customer applies. ™ & © 2018 Apple Inc. All rights reserved.
Offer valid Wed 7 Mar - Tue 13 Mar 2018 and order must be placed prior to 11:59pm Tue 13 Mar 2018
I know this is probably a stupid question but just looking to understand from someone who does it - I recently signed up to Netflix with billing through iTunes. If I load up my iTunes account with credit, I'm assuming my monthly subscription fees are taken out of the iTunes balance instead of debited to my card? Whilst there is iTunes credit on the account of course.