So obviously, the answer is yes if said programmer can do better after expenses/overhead/time with an agent than without.

So I'll bite. Where does one find such an agent, how much do they typically charge, and are there any statistics on how earning power changes using an agent?

Seems stupid and pretentious. Furthermore, the market is so hot that I can reach whoever is employing directly. Convincing them to pay more because they don't have to spend anything on recruiters or silly agents.

No reason someone else should make money for me finding a job.