The best player in the game and a historically great hitter falls into that category. Hell, same with signing the 27 year old hefty fellow who hits doubles, might have the most HR power in the game right now, doesn't K, walks alot, and can probably get by with the glove for a for a few years. That guy is so good he can be argued as being a better buy than the best player in the game/historically great hitter. It's not often superstars hit the FA market. When they do, for the most part they instantly become "the right player."