1.Could you give me a discount?能给我打个折扣吗？
2.Is the price negotiable? 价钱可以商量吗？
3.Could you give me a better deal? 可以给个更优惠的价格吗？
4.How about 200 RMB? 两百块钱怎么样？
5.It's too expensive. I can't afford it. 太贵了，我买不起。
6.I've seen this cheaper (in) other places. 我在别家有看过更便宜的。
7.Lower the price, and I'll consider it. 价钱低点我再考虑考虑。
8.I'll give 100 RMB for it. 一百块钱我就买。
9.That's steep, isn't it? 这价格太离谱了吧