Over the last four years, among qualified relievers, he's 11th in WAR and 9th in xFIP. I don't think 12M/year is reckless for his age 29 through 33 years, as long as the arm is fine. Similar guys surrounding him like Chapman (okay, Chapman is better), Miller, Kimbrel, Jansen, Britton are all making more than that per year. We're going to need a good closer for at least three of those years anyway, hopefully four, so why not get one at a fair price who wants to be here for those years?