"Advertising Age has just released its annual survey of the average cost of an advertisement on broadcast TV shows, and the results are fascinating brain candy for the TV fetishist. Fox dominates the ad dollars with five of the six most expensive shows on TV. The upcoming Simon Cowell-free season of American Idol ranks at No. 1 with an average of $467,617 for a 30-second spot. While slots 3-6 are taken up by Glee, Family Guy, The Simpsons, andHouse."
-The least expensive hour of original programming is The CW’s Supernatural, with $29,100.
-The CW’s most expensive show is The Vampire Diaries, with $74,913.
Source: EW.com