This is not the time to have a friend do you a favor. And make sure it's a professional wedding photographer. I know many people who have hired someone they know who is a wonderful fashion photographer, but who has had no experience photographing weddings. And they were all disappointed. It's a very specific endeavor, and there's no chance to reshoot.
Some photographers charge more for black and white, but it's generally the same.
I've found that the still wedding photography ends up being 9 to 13 percent of the total budget. All rights reserved.