Not to mention typically has a warranty of some sort! Also if a reputable dealership most likely willing to take care of you if something goes wrong shortly after purchase if too many miles to offer a warranty.
2004 SportsEdition V6 - 1 owner, all maintenance done at dealership, 55k miles garage kept. $10,900 NY 1 month ago.
Note - I work at dealership, paid what we took it in for :)
Had we retailed it, would have asked for around 14,900