Not all non-big box stores in South Korea have an online presence. In fact many don't.
Oh yeah...how do I know? I lived there (Apgujeong-dong in Seoul).
Some might have general websites, but they aren't going to list their entire inventory on them, just like stores in the US that don't do online ordering, don't list their entire inventory online.
So it won't be unusual to not see HJOE listed on websites for sale in local stores.
Although South Korea is one of the most wired countries in the world with the highest use of the internet, their retail landscape is different than in the US.
Stock manipulation according to the SEC. "Making false or misleading statements about a company."