Regarding relievers, I think most of us think that most of them are crap shots. On the other hand, only a dozen or fewer can handle high leverage situations decently while staying relatively healthy, but not year after year consistently. Only a handful or fewer can handle consistently high leverage situations year after year while staying healthy —Kimbrel is one of them. Also, As I always have said, the 9th inning is not for everyone regardless the stats under your belt —Look at Miller, excellent reliever (setup man), awful closer.
Said that, pay the man.