Lost all back support in less than 2 years. And overprice.

I bought a FIRM mattress expecting my body to be supported for many years, especially my back. On the promise of a 10 year warranty if unsatisfied. After 1 year already, the mattress sags in the center; I must move to the edge for some comfort. Of course, I roll into the middle once asleep. I wake up every day with a sore back. The mattress is the cause; I have eliminated other factors. For $300-$400, it's vastly overpriced. I can get a very good quality mattress from Amazon for less than that. The store (MatressFirm) told me that 10-year so-called warranty only applies when the sag reaches 1-1/2 in. Basically, the warranty is useless. I must now throw out a 2-year old mattress. Shameful.

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Pros:
    User also said: Initially, for less than a year, it was firm as claimed.
    Cons:
    • Back Support
    • Surface Integrity
    • Overall Value
    • Warranty Terms
    User also said: Afer less than 2 years, it already sags and causes me to wake up with a sore back every day.
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    Ratings from this Sleeper

    Back Support

    User rated this bed:
    Very Poor Back Support

    Pressure Relief

    User rated this bed:
    Fair Pressure Relief

    Sleep Quality

    User rated this bed:
    Much worse Sleep
    Previous mattress was:
    Innerspring / Traditional

    Stays "Cool"

    User rated this bed:
    Fair "Coolness"

    Value

    User rated this bed:
    Very poor Value
    Price paid (approximate):
    $1,800

    Warranty Service

    User rated this bed:
    Very poor Warranty Service

    Softness Level

    User rated this bed:
    Just right