1. Hey, don't try to rip me off. I know what this is worth.

别想宰我，我识货。

2. Can you give me a little deal on this?

这能卖得便宜一点吗？

3. Can you give me this for cheaper?

能便宜一点给我吗？

4. Is there any discount on bulk¹ purchases?

我多买些能打折吗？

5. Give me a discount.

给我打个折吧。

6. How much do you want for this?

这件东西你想卖多少钱？

7. If you don't give me a better price, I won't buy this.

如果价格不更优惠些，我是不会买的。

8. I can get this cheaper at other places.

这样东西我在别的地方可以买到更便宜的。

9. What's the lowest you're willing to go?

最低你能出什么价？

10. Come on, give me a break on this.

别这样，你就让点儿价吧。