My son was in the same situation, so we made one using a 120v/240v contactor, a 120v zwave plugin switch and a small utility box all purchased on Amazon. Assembly took about an hour. We adjusted electrical cables to suit.
I have an Enbrighten, functionally it's the same as we built.
I saw those controllers but they looked so light weight for the amp load they're controlling.
Interesting, thanks!