Dear Mr. Davis
We have received you recent enquiry, and we appreciate you for your feedback. As a result, your enquiry has been transferred to the manager of the sales department and a reply has been issued.
We understand your current situation,however as the price of the fine materialsr equired for our products are rising, it is crucial for our prices to stay within the equilibrium to ensure a profit. Furthermore, as more customers are demanding for our high-quality products, it is extremely difficult for us to lower our price more from the minimum.
We certainly apologize for the unfortunate outcome of your enquiry, but we unaffectedly hope we will have more pleasure of doing business with you in the future.
Yours sincerely
XXX
好吧 上面的差不多150字 .