I've shot a few weddings and to make a viable business out of it and do quality work, you need to charge about a grand per wedding. Probably more, depending on various factors. Really, that's just how the numbers work out. One reason the wedding photography business is so tough is that the people who buy your services have no idea what's involved (all told, it's 30-40 hours work, once you have your workflow down, using fairly expensive equipment) and balk at even half that. Esp. since their friend with his first "prosumer" camera has told them he can do it for a tenth of that[1], and they're being ripped off.
So the question really is, how much do you need the work?
[1] He can't; he is in fact committing himself to giving the happy couple those 30-40 hours of his time as a wedding present. But he won't know that 'til it's too late...