Was in Lowes for some other things and found a couple Eaton plug in outlet switches in the back isle clearance section for about $10 each. Even if I don't use them for switches as I understand it I could use them to extend the range of the network. Their site still shows them at full price so not sure if it's a local deal or what.
https://www.lowes.com/pd/Eaton-Z-Wave-Plus-Wireless-125-Volt-2-Outlet-Indoor-Smart-Plug/1002943570
https://www.lowes.com/pd/Eaton-Z-Wave-Plus-Wireless-125-Volt-2-Outlet-Indoor-Smart-Plug/1002943570