Angielsko-polski słownik potocznego języka businessu Copyright by Wydawnictwo HaraldG (aut. Bożena Hoszowska)
(v) (of an article) to be sold very cheaply, under its proper value - zostać sprzedanym za bezcen / za półdarmo
This typewriter really went for a song and one of the customers had even jumped the queue to snap up a bargain.