Kevin Towers - There's just not a lot of inventory, and to find a shortstop or a catcher,

There's just not a lot of inventory, and to find a shortstop or a catcher, or a centerfielder, that you think that could stay at those positions... they're very hard to acquire. Sometimes you have to overpay for them, because of that lack of inventory.

- Kevin Towers

source: "Q&A: Kevin Towers, Diamondbacks GM". Interview with David Laurila, www.fangraphs.com. December 26, 2012.