I have no clue how I managed to get down this particular rabbit path, but here I am on a conference call, (sorry David), am a bit bored, (still managed to reply every time my name was called), and ended up with this web page on screen.
For a bit under $1k, you, I, your neighbor, a stranger, can own a personal, hand held flame thrower with a range of 25'. For a bit more, you can get a 50' range with interchangeable wands for various applications.
All in all a bit strange. If I can offer one tip, this is probably not a good choice for home defense unless your home is very, very flame resistant.