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It’s hard to put a price on a good night’s sleep. Buying the right mattress — even if you have to spend a bit more — is the key to quality slumber. Recently, J.D. Power released its latest annual U.S. Mattress Satisfaction Study, which asked more than 2,500 customers who bought a mattress in the prior 12 months to rate their purchase. In order of importance, the customer satisfaction ratings are…
