Yes, for 1 chapter it is def more expensive than in the US (which is kinda weird as most manga are translated in Japan and they don't have to pay the shipping cost to send them to the US). However, a book with 3 chapters might be cheaper. Also, there are more options here.
The last time i went to Japan, The book store i went to didn't have much, In fact just a single bookcase Inside a big building. I'm going to Japan soon agajn and I searched for a vid like this, Thank you.
I liked The Loft a lot. It was in the Sogo department store in Osaka by the station, I found a huge bookstore on the top floor of a big store building. The first level looked like a home and garden store. I found a limited English Manga area.
Ahhh I literally just left this store and didn’t find any english manga because the floor guide didn’t indicate that it’s on the 6th floor! I went to 1st and 8th😢
It's called ''Books Kinokuniya'' on the 6F of the takashimaya building near Shinjuku station. If you can find it, just ask people at the store for ''Books Kinokuniya'' and they will tell you where it is :)