I agree with the basic premise of this article, but saying "99% of the time that quote will be a reasonable price" is disingenuous. While some customers that do not know the value web development expect to pay too little, they are just as likely to get overcharged by opportunistic developers.

It is much like getting car repairs. If you go in informed, you are likely to get a fair price, whereas if you don't you may be taken advantage of.