Some alleged shenanigans in the recent past at "Arizona's Big 9, KGUN Tucson"* with the rate card, political ad rates, and local advertiser Sam Levitz, all from azbiz.com:
http://www.azbiz.com/articles/2009/01/30/media_technology/inside_media/doc4983422dbf94f554139405.txt
*: ID audio track from years ago.
http://www.azbiz.com/articles/2009/01/30/media_technology/inside_media/doc4983422dbf94f554139405.txt
*: ID audio track from years ago.