Eligible UOB Mastercard card registration and offer activation is required prior to purchase by going to mtr.mastercardservices.com or www.priceless.com/travelrewards, registering card, and activating offer. Valid for purchases made in AUD only. The offer is limited to one redemption per cardholder per quarter during the promotion period. Cash back will be earned in-store only. Not valid for online purchases. Specific location where the offer is eligible: Lotte Duty Free Melbourne Airport Store. If UOB Mastercard does not receive information that identifies your transaction as qualifying for the offer, you will not receive a statement credit. Statement credit may be reversed if qualifying purchase is returned/cancelled.