Why are clients shocked by the price of web development?

Many comments in this Hacker News thread are bound to frustrate those of you who provide WordPress based solutions for clients. The HN user notes, “it seems that many clients are shocked by the price for a website where they want specific functionality created just for their business. Why is this?” The thread is worth reading, even if just to ready yourself for the criticism that some people like to throw at WordPress, which for some reason takes a beating in this conversation.