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. Offer is limited to one redemption per cardholder during the promotion period. Valid for purchases made in KRW only. Offer is eligible at Shilla Duty Free Seoul downtown store and Incheon international Airport T1 and T2 store. Cash back will be earned in-store only. Not valid for online purchases. 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.