1. The price you offered is above previous prices.
你方報價高于上次。
還能這樣說：
The price you quoted is higher than the previous one.
The price you quoted exceeds the price you quoted last time.
應用解析：
above and beyond 大于，多于，遠于；
above oneself 自高自大，自命不凡；情緒不正常，無法控制自己

2. To conclude the business, you need to cut your price at least by 5%, I believe.
我認為要做成這筆交易，您至少要降價5%。
還能這樣說：
The business cannot be concluded unless the price is reduced by 5%.
To have this business concluded, you need to lower your price at least by 5%.
應用解析：
on business 因公，有事；有明確的目的；
out of business 失業，破產；損壞，受傷

3. We could reduce our price by 5% if you place a substantial order with us.
如果你們訂貨量大的話，我們可以減價5%。
還能這樣說：
If you want for such a big quantity, we can give you a discount of 5%.
If you can make a big order with us, we can discount the price with 5%.
諺語：
A dog will not howl if you beat him with a bone.
骨頭打狗，狗不叫。

4. Can you cut down the price for me?
你們可以降低價格嗎？
還能這樣說：
Could you reduce the price for me?
Could you lower the price for me?
應用解析：
cut a fat hog 虛擺架子，虛張聲勢