Cheaper than most - foam only costs them 25 cents. I thought they were thicker but not by that much. They come in bags but one has a bunch of powder at the bottom like someone has donut hands and wrapped them. (At least I hope it's donut powder and not drugs or toxic chemicals.) I took a damp cloth, wiped it off and immediately washed my hands. Oh, and yes, they support speakers! A bit small (length) for an ELAC Uni-fi UB5 bookshelf, perfect size for KEF Q100, perfect size for your small studio monitors, but could be thicker!
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