go for a song = be sold very cheaply 贱卖；贱价抛售

【例句】
Brad's car is practically new, but he says that if someone will pay cash he's willing to let it go for a song.
布雷德的汽车与新的差不太多，但他表示，若有人支付现金，他情愿以贱价售出。

This table be go for a song at the market.
这张桌子正在市场上廉价出售。