bargain for sth 為某東西討價還價
bargain with sb for sth 因為某東西同某人討價還價
bargain over the price 就價格問題磋商
2、bargain for 確實有如下意思： 預料到；估計到；考慮到
We did not bargain for all this trouble.
我們沒料到會有這些麻煩。
The effects of this policy were more than the government had bargained for...
這項政策帶來的影響是政府始料未及的。
3、打折可用discount 折扣，減價，特價
sth is on discount 某東西正在打折出售
get a 20 per cent discount 享受百分之二十的折扣，就是打八折。