They offer pretty good clothes at reasonable prices. Since it is a SM brand, the models for the brand are always SM celebrities. So I enjoy seeing those posters of them dressed in the clothes that actually exist in the store. If you are a big fan of SM, you might like it even more. Also you should check this place out if you are looking for any clothes of reasonable prices.
You can easily find this place, since there are quite a lot of branches in Seoul!!