Well, I never let you know :) Eventually I went to see what the price was for filters like the one I told you about, and apparently they are not very expensive. They are around 40-50 dollars. A few years ago, that would have been some money here, nowadays, not so much. And while I can obviously afford it, I still don't know if I'm going to buy it. Probably yes, but not yet. Thanks for your interest anyway.

Also, I'm not sure if it's worked with carbon, as I told you, or not, I think it's another type of stone, but I'm not sure.