1. This is our rock-bottom price. We can’t make any further concessions.

这是我方最低价格，不可能再让了。

2. We can’t make any allowance for this lot.

这批货我方不能再让价了。

3. I’m afraid there is no room to negotiate the price.

恐怕没有再讲价的余地了。

4. The possibility of a fall in price is rather remote, I’m afraid.

恐怕降价的可能性很渺茫。

5. We very much regret to say that we can’t cut the price to the extent you required.

非常抱歉，我方无法将价格降到贵方所要求的程度。