It looks like Ridibooks is also a publisher, and their works are exclusive (so they don’t appear on Yes24 or other retailer sites). They don’t seem to have a category for their own published works, but 명 바꾸기 | L30?? is an example, and if you scroll down its Ridi page to the recommendations there are lots of others (you can also see several on the domestic best sellers categories, like this one - they all have ‘RIDI’ in the bottom right corner of the cover).
Would it be possible to add functionality to be able to add these books directly to the site since they can’t be added via Yes24?
