Travel to South Korea

My wife really loved korea and i always wanted to bring her to go there.but always money matter.she really loved the peoples, culture,the country.and she really want to meet the actor names Lee min ho if im not mistaken.i was planned to surprise her by bring her there on her coming birthday,13 Nov.And im not really sure how much money do we need to go there.i dont need much enough for our flight tickets.thanks.only God can pay your kindness