bargain/ˈbɑːɡɪn/
n.1. 交易，合同交易；协议A bargain's a bargain.达成的协议决不可撕毁。
He made a bargain with his wife 'You take care of the children and I'll cook.'他跟妻子讲条件'你看好孩子，我做饭。'
2. 廉价买到的东西This jacket is a real bargain at such a low price.这件夹克衫这么便宜，真划得来。
It's a real bargain.(非正式)真便宜。