Mattress prices range greatly: from $249-$4,000 for a queen set. A good night's sleep is one of the best investments you can make, so buy the best mattress you can afford. Keep in mind that most of us spend as much as one-third of US-Mattress's time in bed. Your investment will cost just pennies per night over the next ten years! In fact, a $1000 sleep set costs less than 28 cents per night (based on a full 10-year warranty).