Television advertising is sold through various unique ways. Advertisers choose specific time slots for their ads. Networks offer packages based on viewership. Ratings help determine the price of ad spots. Advertisers can buy local or national ads. Local ads target specific markets. National ads reach a wider audience. Agencies often negotiate deals for advertisers. Advertisers may use demographic data to select shows. Popular shows command higher prices. Seasonal events also influence ad sales. Advertisers plan campaigns around major events like sports finals. The process involves careful strategy and research. Successful campaigns rely on effective placement and timing.