when you compare leasing used aircraft, the costs of a B200, a B350 (and a B1900D for that matter) are all fairly similar (around $35000 to $45000 US per month I believe and hugely overpriced) and we all know how much (or how little) it costs to get an FO on the payroll so I reckon the price difference must lie elsewhere!! (not saying where though..I'm not sure)