In this profession, no one does himself a favor by lowballing their Independent Contractor fee. You demand high fees. Minimum $400 per day. Don't take anything less than that under any circumstance. If you demand high fees, other OD's have more respect for you. If you give other OD's a chance to sc*ew you, they will. Stand your ground.
I discovered that the hard way. I used to be soft-hearted and ask for only $250 to $300 per day and got treated like a dog. When I started demanding $400 per day minimum, I actually got treated with noticeably more respect.
So, don't be afraid. Demand to get paid because it's hard enough just to do the job. To do it without adequate compensation is simply out of the question.
I've turned OD's down who whine about paying out an IC fee of $350 per day. It's not worth it to me to work for a cheap OD. They're awful. Those types will find a way to sc*ew you out of bonuses, etc. In those cases, I've held out for more and found jobs where I work equally hard for $425 per day in a better work environment.