It's currently 93°F with a heat index of 101°F. I cut some thin plywood and used the foam from the box the battery came in to get the hot end of the Zerobreeze outside of my Tahoe. It's been running 12 hours now on my separatly installed 200Ah LiFePo and I am cold. That's in the shade. It won't keep up if I park in the sun. I use the round punch out piece of foam in the air out hose makes a big difference! It basically creates two orifices to increase air velocity from the hose and also acts as a directional adjustment. Redneck? Yes. Functional? Very much so.
I guess the answer of if it's worth the $1200 will depend on how long before it breaks. Time to start figuring out how to install it completely inside and insulated, running the exhaust hoses out the floor.
Biggest thing I can say is that this is a true air conditioner, NOT one of those water misting fans. It's small, so I would call it a personal air conditioning unit. Isolating the condenser end of the unit from the area being cooled is key to good performance.
I use the battery as a huge power source for USB charging and to run my lights. Not necessarily how they designed it all but it works for me.