Know the competition

With business rivals, honesty is the best policy.

Being direct, honest, and upfront will help keep you from being blindsided later, and in many cases, it will allow you to truly understand the viability of the opportunity. When someone asks you about a feature your competitor offers, the best response is simple, "Yes (or no), we can(not) do that. I am curious, how important is that feature for you to make this decision?"

your last offer

Is 30 dollars your last offer? 

ぼったくりの値段・不当に高い

a rip-off price

Avoid these shops they charge rip-off prices. 

Designer label clothes are just expensive rip-offs.

It will cost you an arm and a leg to shop here.

ベスト・希望は何、いくら？

the best you can do for ....

What's the best you can do for this car?

What's the best you can do for a week-long vacation package?

一週間のパック旅行でベスト(やりたいこと･価格等)なのはなんですか

まけて･値引

a discount on ....

Could you give me a discount on this shirt？

話し合いの余地

wiggle room on ....

Is there any wiggle room on the price of this vacation package?

wiggle  /'wɪgl/   v)小刻みな素早い動き　n)小刻みな素早い動き

Our teacher gave us wiggle room.   弁解の余地を与えた

There's no wiggle room to think about it? None at all?  考える余地なし？ 全然？

Our pricing is standardized, but there might be a little wiggle room.

弊社の価格は標準化されていますが、多少融通が利くかもしれません

Is there any wiggle room here? この点において少しでも余裕はありますか？