Not only does it seem WAY expensive, it also looks like pipes have to be opened (plumber) for installation.
Zooz Titan z-wave water shutoff, and Aqara water leak sensors work just fine here, at a fraction of the cost. You can literally buy the Titan and TEN leak sensors for less money than just the Leak Gopher valve (nevermind any sensors) - and that’s assuming you’re capable of installing it yourself. LOL