It is an audiophile-grade empty box, designed to resonate only on even ordered harmonics with a state of the art damping curve.
You can sell them 3¢ hunks of plastic that do nothing for $150.
It's not even hurting anyone. They're all rich old dudes with dozens of guitars they never play hanging from their walls in a room filled with records they never listen to.
If I could figure out how to sell them 3¢ hunks of plastic that do nothing for $150 I would be very happy, but my conscience won't allow it.
I got a bottle of Three Chord bourbon last year. Holy cow the blurb on that bottle... something like "One day during a show I noticed how my drink sitting on my amp was vibrating..." and they freaking claim to play music at the casks.