I have a like new Amerisleep king size memory foam mattress. I got it new about 6 months ago but only slept on it for a few months. It has had a mattress protector on the entire time I have had it. I am only getting rid of it because it’s too big so I downsized to a queen. These mattress cost 2k new. There are no stains or issues. $350 OBO cash.