We love our ecobee thermostat. And those three remote room sensors do a nice job of making rooms where you are located, especially rooms located far from the thermostat more comfortable. Great if you spend a lot of time in a room that tends to otherwise be too warm or too cool.
And if you don’t have an Alexa/Google Home compatible thermostat, not having to open up an app to tweak the thermostat temp up or down, but simply verbally telling Alexa/Google to do it is handy.
Is there any reason this product sold by Woot would not qualify for energy provider rebates?
Really no way for us to answer that. That’s up to your provider.