Regarding the 175 I am just referring to some articles about the operating costs:
Bristow To Launch Eurocopter EC175 in U.S. | : Aviation International News
“If we can use the EC175 for this mission profile,” Chiles continued, “it will be almost half the cost per seat-mile compared to a heavy helicopter.” The heavies in this market are the Sikorsky S-92 and Eurocopter EC225. “Obviously, if you need to carry 18 passengers and need to go to 180 nautical miles, the super mediums, or what we call the light heavies, don’t work.”
I do believe that you also are right tottigol, lowering the costs for pilots etc. The best times have passed, we are just a few years behind the airliners.