Yes, I have an agent in the US, and in Canada (where I grew up). The agents only represent me for commercial work, and not editorial assignments (as there is no money in magazines).

As a freelance photographer you're largely fending for yourself, and it can be pretty solitary, so having an agent in your corner is of real value. Plus, having a rep is a sign of stature, as not everyone can get one.

My agents take a percent of my advertising jobs, and otherwise I don't pay fees for just being on the roster, so it's a win-win situation. I have had an agent for over 25 years, so I have no illusions that they are the magic bullet to big money and constant assignments. Hence, I work hard to promote on my own and keep making great work.

The market place either has wants what you make, or it doesn't, no agent can get you jobs if the clients aren't interested in what you do.