With viewership expected to reach as high as 106 million, the price for a 30-second pre- or post- Clinton-Trump presidential debate ad (the 90-minute debate is ad free) on a major network is $225,000. While a far cry from the $5 million price of a 2016 Super Bowl spot, which was watched by 114 million people, the Super Bowl is only broadcast on one channel. Viewer discretion is advised.