I have a one-year-old king sized Tempur-Pedic mattress for sale. I got it in June of 2024 from Ashley Furniture for $3,200. It is a Temper-Pedic Adapt Medium firmness mattress. It is firmer than what my wife and I like so it was only used for a couple of months. It had a protective cover over it the whole time it was used. Unfortunately, my son used it for a sleepover recently and it now has two small stains on it now. I'm asking $400