It's a tough area to get into, as others have pointed out.
A friend of a friend was very successful wedding photographer, as in costing thousands for wedding shoot.
She had a price list on her website. At the bottom she had the "Dream" package. $20K + all travel expenses. ie: She was dreaming anyone would go for it.
You had her 24/7 for a week, coverage of every pre-wedding event, wedding prep, the wedding, the reception, and any post reception events.
She sold one in her career. But was under such a NDA, she couldn't even talk about where she went or show any the pictures, let alone who the couple was.