By at least offering a starting price for web dev services, you immediately eliminate the hit and runs and those that aren't willing to pay for professional services because they think they could do it just as well for free.

On the flip side, people who *are* willing to pay appreciate the fact that you are forthcoming about what you charge. If a site's services are out of my league, price-wise, then it's a waste of everyone's time (theirs and mine) for me to contact them just to know what ballpark we're talking about.

You charge what you charge - and if someone runs away at those zeros, you probably weren't going to get their business anyway. There may be the 1 person that you could convince that it's worth it by showering them with all they'll get for the money, but our business is devalued too often and, in my experience, if people have a difficult time with the zeros, they are coming to you with a preconceived idea that web design is something "any idiot could do."