yù is strictly classical / literary. The everyday verb for 'to sell' is
卖.
鬻 carries a flavour of selling under reduced or undignified circumstances — selling out, selling cheap, selling something one ought not to. Surviving compounds:
鬻爵 (sell official titles, a chronic late-imperial corruption practice),
卖官鬻爵 (sell offices and rank — a set chengyu-style condemnation of corrupt government),
鬻文 (write for hire),
鬻艺 (sell one's art, often said of itinerant performers).