"""
I consider myself a pretty good plumber, with concrete manipulation abilities. In the same time, I'm handy enough to setup my own website in HTML, style it in CSS, and even animate stuff on my static site using jQuery.
...
In my opinion, all this javascript and css stuff is way easier than septic systems or repairing frozen/busted pipes in a turn of the century home.
...
I constantly see craigslist postings for web developers and entry QA positions at $20/hr...
"""
I'm not trying to be excessively snarky, I'm just trying to point out that our society is at the point where different services have reached different natural values. They're typically based on your standard economic factors like how saturated a market is with available employees, how much experience employees bring to the table, and how much they have determined to charge based on competition.
Alternatively, you can just go with Betteridge's law of headlines. :-)