What a super-awesome place!
My friend and I came on a rainy afternoon, and we were pleasantly surprised to find the restaurant rather empty. The tables quickly piled up with people later on in the evening, and Korean words were heard from most of the tables. Personally when I see someone who is of Korean-descent eating in a Korean restaurant, I feel as though the restaurant is more authentic. (This is true for all other restaurants as well.)
The food arrived very quickly, accompanied with a pot of purple rice, fresh eggs, a water bottle and side dishes. The soup wasn't terribly spicy, and mixing it with the rice was delicious! The portions were well-sized and really filled us up. I had the dumpling soon-tofu soup, and it contained 2 dumplings, which is a rather tiny portion. The menu is very minimal, but that just means that this restaurant is especially focussed on soondubu!
It's not pricey at all and if I lived in Koreatown I would come here more often! I have no complaints about Buk Chang Dong.