In general G550 and differences is best routeThere are very few G450 simulators in th
The G550 is quite common.
The G450 differences is 1 day.
I suspect the G550 and G450 differences will always be cheaper.
As to specific prices I can not answer that, the G550 route is prefered as it in basically less cost to most students.
I suggest you ask the service providers, as well as any consolidators.
A pair of students might be less expensive that a one off.
Glf