There are many examples of this. Quants. People who do risk pricing for Citibank. The kind of people who work on credit score algorithms. There are comparative peons in Google/Facebook/Zynga who will make millions upon millions because they are really good at twirling a few knobs which are attached to a faucet that spits out money.
Last March I wrote server-side logic, some Javascript, some HTML/CSS, a bit of Ruby goo, and some documentation justifying my choices. For that my employers paid me $3,000. This May I wrote server-side logic, some Javascript, some HTML/CSS, a bit of Ruby goo, and some documentation justifying my choices. I made a wee bit more than $3,000 this time, largely because the punch line was "Project partly successful, sales up N%."