一般情况下在美国商店里买东西是没有讨价还价的。但很多情况下是可以的。比如美国人的garage sale，大街上的交易或跳蚤市场里的交易。 特别是有当你买大东西的时候，比如房子、车子时一定要记得和对方讲讲价。不然你就亏大了。
下面列举的是议价时可能用到的句子：
How much is this?
How much will that be?
How much are these altogether?
I think this is too expensive.
That's little too much for me. Could you make it less for me?
I can't afford it. This is too much.
This is not a reasonable price.
I don't have this much cash on me. Will you make it little cheap?
What's the regular price? Do I get discount on this?
Tell me what's the best price you can do for me?
If I pay you cash, will you give me some discount?
I'd buy this if you can make it a little less expensive.
I'd buy it if you reduce the price a little.
May I have a discount on this?
Will you give me a discount?
Can I have a discount?
Would you give me a discount if I buy three of these?
I've come all the way from China; please give me a better price.