OMG! This is totally worthless!

They need internet access

Assuming you are in the U.S. you'll probably need a power supply for 110v (typical wall outlet), unless you have access to 220v which these units do like more and run more efficiently on (220v is what we typically use for the dryer, electric stove, and large equipment)

They do put out a ton of heat and noise. If you need heat for a chicken coop then this is a viable option. Look up some videos on YouTube to make a heater out of one of these.

I'm no expert but I've found second hand units in that price range. I'd make sure it has a compatible power supply for your needs

I think it largly depends upon your electric rate. IMHO the sats will eventually always be worth it, and If you have a need for some heat then it's an absolute slam dunk.

Prove it!

Shout outs to @Tartaruga Falida and especially @Kieran
These manic were zapping everything in sight.