1.That's unreasonable! I'd take it for (100?.)

　　这真是卖得太贵了！如果（一百块）我就买。

　　2. How about (100?)?

　　卖（一百块钱）如何？

　　3.I'd buy this if it were cheaper.

　　再便宜一点我就买。

　　4.Lower the price, and I'll consider it.

　　价钱低一点我才会考虑。

　　5.It's a little overpriced.

　　这标价有点贵。

　　6.I like everything about it except the price.

　　这东西除了价钱之外我都喜欢。

　　7.I've seen this cheaper (in) other places.

　　我在别家有看过更便宜的。

　　8.I heard other stores were having great mark-downs on this item.

　　听说别家的这个东西在大减价。

　　9.If I buy more than one, will you give me a discount?

　　多买一点有折扣吗？