How long did the photographer spend learning to compose photos, use cameras, etc and what is their reputation? Is it an actual business or a hobby? If it's a business, there are costs involved that most people never consider. How would you recover the cost of everything involved in this kind of endeavor?
That price may have been his way of saying he's too busy to cram your wedding into his schedule without saying "I'm not interested".
Knowing that most custom integrators who do that as a real business charge $70-$150/hour, how would you react to the estimate for a small-ish home theater system installation when a complete pre-wire can take many hours in a moderate-sized house?
DIY-ers can do some things, but the results from a professional can be far beyond their level. Any idiot with a smart phone thinks they're a photographer, but if you look at their photos, they usually suck. That said, the bad photos did capture the event and most people don't analyze photos or even music to the extent of someone who does them for a living.