A person close to Fox says the network is selling ads at or above "upfront" pricing, which averaged $400,000 for a 30-second spot. "Upfront" pricing refers the rates at which networks sell ads during their annual selling season in the spring. Some media buyers, however, say they're getting a deal on X Factor spots. One media buyer paid $350,000 for a 30-second spot during the network's "upfront." Another buyer said 30-second spots are now selling for between $280,000 and $300,000, depending on the day it airs. "American Idol," in contrast, fetches about $430,000 a 30-second spot, according to SQAD Inc., a Tarrytown, N.Y. media-research firm.