You are quite right in your statement

You cannot regret more than I the necessity

You undoubtedly are aware

You will find interest, we believe, in this advance announcement

You will get the benefit of this liberal offer

You will have particular interest in the new and attractive policy

Your early attention to this matter will oblige

Your further orders will be esteemed

Your inquiry has just been received, and we are glad to send to you

Your orders and commands will always have our prompt and best attention