Oddly enough I just bought a used Blackview BV9800 Pro phone today purely for the FLIR camera in it. At $140 CAD it was much much cheaper than any of the off the shelf new FLIR options.
Where did you score it for that price, marketplace, eBay?
Though even the $500 AUD odd going rate on eBay is pretty good given the cost of any of the devices with a screen built-in.