문상 /mun-sang/
Culture gift voucher
Short for 문화상품권 (culture gift voucher/gift card). Widely used in online transactions, gaming communities, and second-hand markets as a payment method.
Examples
문상으로 결제할게
I'll pay with a culture gift card
문상 5천원짜리 있어?
Do you have a 5,000 won culture voucher?