I looked on internet forums and came to know that people in other cities have been paying a certain dollar amount for a particular model of honda civic. I want to quote that price to the dealer here but I am uncertain how to answer if he asks me how i reached this number. If I tell that its by searching forums on the internet he can come up with any answer.

Is there any answer that keeps my credibility?

I looked on internet forums and came to know that people in other cities have been paying a certain dollar amount for a particular model of Honda Civic. I want to quote that price to the dealer here but I am uncertain how to answer if he asks me how I reached this number. If I tell that its by searching forums on the internet he can come up with any answer.

Is there any answer that keeps my credibility?