Where do you interpret that out of the original question ? And where does the OP state that they're seeking the "cheapest wedding photographer" ?
The question is quite clear to me, and that is that this person is doing a "survey" of what people charge to shoot a wedding.
I see nothing wrong with shopping around - but thats not the question.
And if I were the OP - original person who asked this, I would get up and do your own survey, based on what you like, when you like, and how much you like. Because in all honesty all you're going to get here, and any forum is subjective views - which is unlikely to match you the OP's subjective viewpoint.