Compelling television's loss is the bargain bin's gain. KRON 4 is up for sale. Again. Amid a "high level of interest," it seems, Young Broadcasting plans on possibly peddling the network to the highest bidder. KRON 4, once the golden child as the Bay Area's NBC affiliate, was sold eight years ago and turned into an independent station. After seeing much of the KRON 4 news team jump ship - like Pete Wilson (RIP),......