Good business! or
It has no analogues? or
In it something is and it is excellent idea. It is ready to support you. or
Excuse, that I interfere, there is an offer to go on other way. or
Very similar. or
I am sorry, that has interfered... At me a similar situation. Let's discuss. Write here or in PM. or
I think, that you are not right. I suggest it to discuss. Write to me in PM, we will talk. or
I can consult you on this question. Together we can come to a right answer. or
Something so does not leave or
You were mistaken, it is obvious. or