Before traveling to other countries, their phone cards were so expensive. When I arrived Seoul , I have been to KT and SKT to asking for a short term sim card , they say they don’t have a plan like that , and they recommend me to here. OMG it’s only cost 25000 per 30 days for iphone ! The staff says because I am the new costumer if I do a review for them I can get a 5000 extra discount for this !!! At last I get my number only 20000 won !!!!!!!!!!! Thankful ❤️