Please note that current active PS Plus subscribers (either paying or on a trial) are not able to redeem this PS Plus 30 Day Trial offer.
Note: A credit/debit card is required to redeem this voucher. You will not be charged during the trial period. At the end of the trial your subscription will automatically renew into a 90 day membership where you will be charged. You may cancel your 30 day trial at any time.
T&C's
au.playstation.com/legal/detail/item540115/PLAYSTATION®PLUS-30-DAY-TRIAL/
"At the end of the trial your subscription will automatically renew into a 90 day membership where you will be charged."
I hate that…