Simple snake oil detection

Hi there were soooo many posts asking af any given device, toy, tweak or component is snake oil.
I’m not considered to be disbeliever or engineering guru at all. All I know and use is elementary math.

If an amp worth more than new Bmw, I can kinda take that with grain of salt, but if a wire is worth more than stainway grand, I am DEFINITELY sure snake oil is there without even questioning if this particular product makes sense 

So now any audio device can be plugged into the detection formula above to truthfully define snake oil. All you need to know is product name, description and asking price.