Construction details are here in the pictures (might wanna use Google translate for the text):
http://www.phileweb.com/news/d-av/201112/06/29920.html
The poster estimates 10,000 yen for the SRH1840, and 40,000 for the SRH1440. If he had his number switched around, that's $515 for the SRH1840 and $129 for the SRH1440. However, if he meant to say that the SRH1840 is 100,000 yen, that's $1,290: I'm hoping it's the former!
Here's an interview with Peter Barkan:
http://www.phileweb.com/review/article/201112/06/414.html
If my Google Japanese is correct, he liked them better than the SRH940s for jazz, folk and bluegrass. When listening to Dylan, my guess on the translation: "I was surprised at the vivid voice. It was as if Dylan was there and I was not. I was conscious like never before of certain sounds, such as what sounded like hitting a tack with a hammer: the upright piano in the back containing a thin, clear sound. I've heard this song for decades, and this is the first I had heard that sound. With such a wide soundstage, you will often hear the outline of the instrument. "
So, assuming their list price is $515, and street price is $400 or so, I will definitely be interested. Other sites say 2012 for actual availability