Scantech, you are in for a very rude awakening if you start comparing EC and Agusta modern turbines with a Cessna Caravan, my friend. It's like comparing the running costs of a Fiat twingo and a Mercedes F class.
I would suggest running costs for the 130/119 would be in the order of magnitude of perhaps 4 - 6 times. I'm sure customer satisfaction is not going to go up in the same order.
Surely the stall speed of a Cessna Caravan into 50kts of headwind at 6000' is about 40kts groundspeed - no? At 6000' I challenge anyone to "think" they are moving