Looking at the cabin in the EC175, it would seem that if they're going to offer an 18 seat option, the pax would all have to be 5'6" Orientals weighing 140 lbs (10 stone) max, and their consequent baggage allowance would be a shaving bag plus a spare pair of underpants.
To be cheaper to buy and operate, I guess those costs pertaining to the EC225 would have to be factored by something like .66 for the EC175. But I wonder whether Eurocopter could afford to offer them for that.
Does anyone know what the asking price is?