I was in the process of selling my apartment late last year so in between homes I moved back home with my parents, needless to say my king size bed did not fit in my old room, so I went out and got a nice twin mattress. I have now moved back out and got my king size mattress out of storage. I am asking less than 50% of what I paid for this, I had two bed sheets on it at all time knowing I would soon be selling it. I have a bad back so I couldn't just buy a "decent" mattress so... My loss your gain. You have to pick up thought.
Corner of mattress has a small scuff due to transport, does in no way affect it other than aesthetically, would get covered by the sheets anyway.