A: We can offer you this in different levels of quality.
B: Is there much of a difference in price?
A: Yes ，the economy model is about 30% less.
B: We'll take that one.
A: Is this going to satisfy your requirements?
B: Actually ， it is more than we need.
A: We can give you a little cheaper model.
B: Let me see the specifications for that.
A: You're asking too much for this part.
B: we have some cheaper ones.
A: What is the price difference?
B: The basic model will cost about 10% less.
A: How many different models of this do you offer?
B: We have five different ones.
A: Is there much of a price difference.
B: Yes， so we had better look over your specifications.
A: The last order didn't work out too well for us.
B: What was wrong?
A: We were developing too much waste.
B: I suggest you go up to our next higher price level.
A: Did the material work out well for you?
B: Not really.
A: What was wrong?
B: We felt that the price was too high for the quality.
A: Has our material been all right?
B: I'm afraid not.
A: Maybe you should order a little better quality.
B: Yes， we might have to do that.