I am new to Busan and just switched to the subway cards (as compared to tickets).
The following website (http://www.subway.busan.kr/english/02/01_01.php) states that a roundtrip ticket for an adult with a subway "cards ticket" is 1,170 won. However, I believe I was charged 990 won each way. Am I not understanding the website correctly, is it mistaken, or am I supposed to do something different (than simply swipe my card) for roundtrip rides?
Thanks in advance!