I found a queen mattress by a dumpster one day, i thought for certain it had to be all nasty and infested with mexican jumping crabs but upon close inspection i found it to be in perfect condition and clean, like it had never been used.
So i dragged it home and set it down in my living room, steam cleaned it(just to be sure) and tried it out. It was the most comfortable mattress i have ever laid on. Pillow top and an individual spring system (the kind you can set a glass of wine on one side, then jump on the other side and not spill it.), i looked up the price on it... it cost three times more than the one i was using.
I still have it.