I charged $400/14 duty day. Longer duty days charged an additional $200 up to 18 hour duty. Longer then that required minimum 2 days and 10 hours rest. That was as an FO on Lear’s/CE550/CE560/CE560XL. As a capt. it was $600/14 hours…$300 up to 18. On the Sabreliner (larger a/c) everything was $50 more. Also required a per diem of $30-50/day depending on where we were, and they covered hotel/car/misc. expenses via reimbursement.
**Make up a contract and GET IT IN WRITING.
So for a B200 I’d guess $300/$450 for FO/Capt.
Another place to ask might be Flightinfo.com
Keep in mind if you do a lot of contract work, or to get maximum pay; get insurance and keep current at FSI. Those 2 alone can be up to $20000/year. It will cost you but might also get better pay and more work. When I was doing nothing but contract flying, I could have flown 25/day/mo. That would have made me close to $12000/mo. out of that I paid my own taxes every quarter. My best month was real close to $11000. my worst month was about $1200, so it averages out. The nice thing was I only had to work 6/days/mo to cover all my monthly living expenses. 11 trips/mo covered all my living and business expenses.
I didn’t get rich doing it, but I was never hungry either. I would love to start doing it again, but now family obligations (like health insurance a pension, and 401(k) come first.