I unpacked it to watch how exactly this works. And you know what? There is the only one texture file of simple WHITE NOISE. It takes 13 mb. So they try to sell white noise file for 35$.

The texture is just a small part (basically the skin pores), the main part is the scripts which alter the shaders. The pores themselves are not really noticeable unless you render at high resolution and/or close up.

So in essence you have no idea how this works if you only noticed there is only one texture lol

Yes, I checked it in work. My mistake. The script gives good result, though it needs more manipulations by user. Also it always says if V7 is not installed thought she is not needed.