I meant the price of the individual components, not that of the HE box itself. The price seems reasonable for the capabilities that you get in the HE box. I've been pretty impressed so far how modular that it is. In fact I'm surprised there's not a subscription fee, or a premium tier, on top of the price of the box.
I will be getting more Zigbee and Z-Wave devices, I just don't want to throw my existing devices out if I can avoid it. I'm off to a good start with Tasmota, just need to get it dialed in now.
But for things like door sensors and motion detectors, and other things that are battery operated, WiFi is not a good option. You're going to be replacing or recharging batteries a lot more often using WiFi for these sensors, or the batteries will have to have higher capacity, thereby making the sensors larger. There's not really a low power option for WiFi. Yes, I know companies do make WiFi sensors but I just don't think they're an ideal technical solution. IMO, and $0.02.