Forty bucks well spent....

Looking through an old thread about CD treatments, I saw a reference to a product by Audience called "Auric Illuminator." It consists of a black pen to be used on the outside edge of the CD as well as the inside of the hole, and a gel like liquid which is applied to both sides of the disc, and then polished off with special cloths, which are provided.
I had used Finyl brand CD treatment many years ago, and thought it had some positive effect. Anyway, without boring readers or myself with adjectives and hyperbole, I have to say that this product makes a positive sonic improvement that is easy to hear.
I really did not want to shell out $40.00 plus shipping for a cheap pen and a bottle of liquid, but it was more than worth it. For those of us who are still using silver discs, I can't imagine a better way to spend so little and get so much.
I will make the usual disclaimers: I am not affiliated in any way with Audience or the sale of their products.