Hi, I have a nice quality King Firm Mattress and Box spring available. It is only a year old, in excellent condition. We got it March or April of 2010. It has no stains, nothing was ever spilled on it, and it has had a waterproof and allergen cover on it to protect it. It is too firm for me, I have scoliosis and really need a softer bed. It is the brand that Marriott exclusively uses, I believe it's called Jamison, so they are really made to last ... it was a $1200 mattress. We could make you a great deal on it. I would like to get $400. Give me a call if you are interested. My name is Cynthia 850-687-2434 We live here in Santa Rosa Beach.