Expensive hoax or real deal?

Was looking for a mat for my Rega Planar 10, and came across Stein Music “The Perfect Interface”. Reading the description, it is basically a paper made from a Japanese tree, coated with the Stein “magic lacquer” ….$350USD.

Now I have tried a variety of tweaks in my 45 or so years listening to music, analog and digital…. I have experienced some that ‘appeared’ to work… whether psychological or real. Obviously i am not measuring any sort of data, just using the ears I was given. I had a friend who also was a tweak geek of sorts, and we basically concurred on most.

This one just seems too preposterous…. I simply am boggled by it. We’re i independently wealthy, id try it of course, but that can help with my monthly groceries!

Chime in! I am genuinely curious!