Deltec stuff costs the same everywhere, but you might be able to find a used one somewhere.
I have also heard great things about these chillers.
They work on evap, so your top-off will be working overtime, and the humidity in your house will go up dramatically I'm sure (most users try and keep them outside).
The only thing that I see as a problem is the foam pad on the inside that the water runs through. A possible nitrate issue in the future if its not maintained.
In the end, Deltec knows what they are doing and make top-notch stuff, and I'm sure these eco-coolers are no exception.
Cheers,
jiim