Good/Cheap ZWave Plus Relay?

I need to buy two relays, one is to control a 110V outdoor light (the relay will be in a weatherproof box) and one will be to just be a dry contact on a condensate pump. For the condensate pump I saw people recommending is a nice cheap dry contact relay.

What about for my outdoor light? I had been buying but is there anything cheaper than $40 out there I could use?

There is this one...

Hmm seems like a possibility. Seems weird that their dual relay is much cheaper than the single??

It is a little odd, perhaps this is a temporary promotional price or a pricing error. Could always jump on it (in case it is an error) before it goes up lol.