Basic Chinese Phrases----purchasing&bargaining

I want to pick up the car tomorrow morning at seven. Are you open then?
我想在明天早上7点提车。那时你们开门了吗？

Yes, we are, Mr. Wang. How are you going to pay?
对，我们开门。你打算如何付钱？

May I pay in cash?
可以付现金吗？

We'd prefer a credit card, if you have one.
如果你有信用卡，我们较喜欢信用卡。

Yes, of course.
可以，当然可以。

How long will you keep the car?
这车你要用多久？

Just three days.
只要三天。

Are you going to return it here?
你要在这里归还吗？

No. I want to leave it in Chicago.
不。我想把它留在芝加哥。

That will be fine.
那可以。

Here's my visa card.
这是我的visa卡。

Just a minute. Here's your receipt.
请等一下。这是你的收据。

Do you mind if I pay in cash?
你介意我付现金吗？

Do you have any objections to my paying in cash?
你反对我付现金吗？

My plans force me to leave it in Chicago.
我的计划使我必须将它留在芝加哥。

Anything else, sir?
先生，还要别的东西吗？

That's all for now. How much do I owe you?
目前这些就够了，我要付你多少钱？

That'll be fifty-five dollars and twenty cents.
一共55元2角。

Can't you make it a little cheaper?
你不能算便宜一点？

Oh, no sir. We already gave you a discount on each item.
哦，不行，先生。每一件东西我们都给你打过折扣了。

OK. I understand. Thank you.
好吧，我懂了，谢谢你。

Any discount, OK?
可以打个折扣吗？

It is too expensive. How about half the price?
太贵了，半价怎么样？

Only a five percent discount? How about twenty percent?
只打九五折？八折怎么样？

What a price! Lower it, please?
这么高的价格！请降点。

I'll take it. But the price is a bit high. How about free wrapping?
我买了。但价格有点高，免费包装怎么样？