Here's what I do for www.jalopnik.com. I'm sort of a Photoshop "short order cook" type of guy. They come up with a story, request from me to do something crazy like put a Porsche chasing an Olympic skier down a hill. And I do it for them as soon as possible. On average each piece has a rush time limit on it around 10-30 minutes. These are just a few from hundreds.