用英语跟别人讲价的语句（初中）

What is the best price? 最低价是多少
Will you give me a break? 减点吧!
Will you give me a better price? 给我好一点的价钱吧!

could i take it by.....(加一价格)
would you please cut down some price?
what about....(加价格)

How much is it ? 多少钱? 口语化可以说成 How much ?