The item has arrived much earlier than expected. Very fast delivery and excellent packaging. The volumes are in quite good conditions, but they don't correspond to the image shown: they aren't ALL 1st edition (from 1975 until 1979), but of different editions instead (most are New Edition reprints 1991-2001). I don't know if that was declared by the seller, because I can't speak japanese and the translators I used to try to understand the description of item haven't been very helpful. Consequently I can't say if I payed the right price or not.