Kwang and I made the trek to Costco last weekend. I've never actually been a member before so this was a big move. Apparently my membership works around the world too. It was only $35won to join which come to about $30USD so a bargain at that. Even though we don't have a car we found a bus that picks us up and drops us off less than 100 yards from the entrance of Costco and our house.