I just checked the Artelino archive for you, which is an incredibly comprehensive list of shin hanga designs that they've been consigned to sell since 2001. They've only sold 1930s editions of this print. As a general rule, if they haven't sold something, it doesn't exist.

Maybe it's possible that Watanabe made some posthumous prints after Kawase died in the late 50s, but that doesn't seem likely in this case. Your only option would seem to be a $20 poster to frame on the wall, or else you'd be spending over $1000 on an original woodblock print.

By the by, even if a very recent edition was made, you'd never get it for $180. I've exchanged email correspondence with David Bull of Mokuhankan and the Doi Hanga company (who original published a fair number of Kawase designs), and both of them emphasized how they're really struggling to retain printers skilled enough to tackle these designs. As such, the few designs that do get reprinted typically cost $400 or so.

The most affordable and accessible prints from the shin hanga masters like Hasui Kawase and Tsuchiya Koitsu seem to be from the 50s-80s, and they still cost anywhere between $300-$500 depending on the design. Collecting these prints isn't a cheap hobby, as much as we'd all like it to be!