How much did Apple pay to give U2's new album away for free?

How much did Apple pay to give U2's new album away for free? - Apple and U2 have had a close relationship for a long time, and to help top off Apple's iPhone and Watch media event this past Tuesday, the band flew in from across the Atlantic to play a set for attendees at the Flint Conference Center. Even more ...

(Via The Unofficial Apple Weblog (TUAW).)