Actually to expand on this, I once put a price in to do a site, it was a brochure site, nothing amazing. I put in a low price as it was for a business a friend worked at (a beauty shop). It was a small business, not much free cash so I did it at a very good rate. I then found out via a phone call one day that I had not got the project as she had hired a company that was charging her twice as much.
To give me a real kick, I actually found out when the other company rang me to ask for DNS login details to change the A records, she had not even told me herself I had not got it or given the chance to show designs and a development plan.
It turns out she thought she would be getting a better service and end result as I was charging less when in fact I was doing it as a favour. It goes to show it can work either way!
Problem with being a smallish web development company is that you're either getting the difficult dregs, or you're hoping large multi-disciplinary agencies don't lure away your lucrative gems.