If it helps - and I know it will not... South & East Wales Police Air Support claimed this week that they are paying Bond Air Services £1.8M per year for their EC135, pilotage, on site engineer, spare aircraft on tap and the base facility.
I guess that is for 1,000 hours but of course that nasty word 'profit' is also part of that set of figures so perhaps that may be seen as the top dollar price.