306.We are pleased to grant you a 7% discount from the original offer， since you agree to increase the order.

307.To get business under way ,we are agree to take this as an exceptional case.

308.We are prepared to reduce the price to 7.21$ .

309.10% is out of the question ，but we are prepared to offer you 8%.

310.As a special accommodation ，we are agree to your DP payment terms, but only for once.

翻译:
如果你们同意增加定单，我们很乐意给你们原价7%折扣。

为了使交易顺利进行，我们这次就破例同意。

我们准备把单价降到7.21美金。

10%是不可能的，但是我们准备给你们8%。

作为特殊照顾，我们同意DP付款条例，但是仅此一次。