I found and bought 15 yards of the gray sil-nylon at my local Walmart (Camden, SC) this past weekend at $1 per yard. It passed the water glass test referenced earlier in the thread. I am not sure yet what I am going to use it for, but I could not pass it up. The department manager was excited to get rid of it. She said that she was tired of picking it up. Being slippery apparently it kept falling out of the rack! Apparently they have had it for several weeks or months.