Complex sentence: More expensive than every other Cadillac model at US $12,479, the Seville was a smash hit, and spawned several imitators, such as the less-than-successful Lincoln Versailles, and later the Chrysler LeBaron/Fifth Avenue.
Split into simpler sentences: More expensive than every other Cadillac model at US $12,479, the Seville was successful in the marketplace. It spawned several imitators, including as the Lincoln Versailles, and later the Chrysler LeBaron/Fifth Avenue.