http://www.gaebler.com/Television-Advertising-Cost

http://www.gaebler.com/Television-Advertising-Costs.htm The standard half-hour of television contains 22 minutes of program and 8 minutes of commercials - 6 minutes for national advertising and 2 minutes for local. National advertising is obviously your most expensive option, but even then the rates vary by Nielsen-rated viewership. Highly-watched programs can command rates in the millions of dollars. For example, a 30-second spot during the 2005 Superbowl sold for $2.4 million. Commercials during less-watched programs are more affordable, but the cost of those commercials may still run in excess of $100,000 per 30-seconds.