Thank you, guys! This is very helpful. A resume and writing sample is straightforward but I hadn't bargained on having to develop my own fee schedule to submit with my application!
May I pose another question?
I floated my plan past a friend and fellow adjunct, and she flipped out a bit. She said that if I every applied again to teach college or work at a university, working at an essay mill could come back and bite me. Her take was that nobody would hire me in a university setting if they found out that I had done something so blatantly unethical.
(I hate to admit this, but my conscience is untroubled. I've been in and around universities enough to know that college in the US is a pay for degree system anyway. If I'm being pressured to give borderline-illiterate students no less than a B grade in exchange for $300 a credit, huge class sizes, a shared basement office, and no benefits - well, the system is already morally bankrupt, and I'm happy to give it another nudge towards the edge. I'm already getting paid (a pittance) to give undeserving students a useless degree. I see essay writing as an extension of my old job, but potentially better paid. Sorry to be such a nihilist.)
Still, the truth is, I could still potentially finish my doctorate, and I hadn't completely closed the door on working for a university again. I just need something I can do sedentary and from home for a few months.
What are the odds that future employers might find out? I know I will have to report my income on my taxes, but I'm not planning to put it on my cv or anything.