Agree with the answer of the following one, to say clearly is a high-class restaurant or fast-food restaurant, and medium type, but also how big, sell is the palace dishes, or barbecue meat, or cuisine, or snacks, or soup.

Specifically, Korean cuisine is more segmented, so many restaurants are only selling two or three dishes, so you have to choose, what kind of model.

Also consider where to open, the capital can be considered a minimum of 100,000 ~ hundreds of thousands or millions may be available.

But you also need to consider your business for the object is, Korean or Chinese, because the two countries business approach is different, I would recommend for the Chinese people to do business, the Chinese guests are consumption will be higher, and because this is China, so grasp the Chinese guests to make money a little more opportunities.

And if you are targeting Koreans, you don't have a very authentic flavor is not to do business, like three X similar non-Korean flavor, non-Korean service business approach is not to catch the Korean guests, it is recommended that you go to Wangjing's Zixiaguan, or Wudaokou's fireplace fire these hotels to learn a little bit of their business law.