@Kantar_Media found that the average rate for a 30-second spot during the Super Bowl has increased 75% over the last decade to $4.2MM in 2014. @nbc said that it had sold 95% of its 30-second Super Bowl ad slots for ~$4.5MM. Networks have also increased the volume of commercial time during the Super Bowl over the past decade (2005: 40 mins and 15 secs of ad time vs. 2014: 49 min and 15 secs). Advertisers are willing to spend so much money on Super Bowl spots because of its massive audience. @Nielsen said 2014’s Super Bowl had a record 111.5 million viewers. Furthermore, viewers are just as interested in watching the commercials as they are watching the game. - Link