Jesters, a popular western Australian meat pie chain, has opened in Itaewon, around the corner from Dunkin' Donuts--go straight two blocks from Exit 3. For some Aussies, this is he equivalent of the Taco Bell for Yanks: it's not the greatest food in the world, but it's a real taste of back home.
My only experience with Down Under meat pies came on my trip to New Zealand; they were quite tasty. On my trip to the new Jesters, I got the "Classic" which is the traditional mince pie, and a "Southern Man" which is beef and cheese. I rounded it off with a mango smoothie, and the total came to a relatively hefty 11200 W (considering the #2 Combo at Taco Bell is 4500W).
The fillings were both really tasty, but I imagine the real trick is in the pastry. The Jesters website (Australia; Korea) claims their unique "Jaffle Pie maker" does the job better, but I found the crust less flaky and more chewy than I'd like, though on the other hand, I hate a crust that explodes into bits the moment you bite into it.
Still, it's definitely worth a trip, and I found at the website there's a location in Hongdae.