There doesn't seem to be much in the way of economies of scale when it comes to the cost/watt of electric motors.

Most 50 kW motors cost between 6 cents* / watt and 20 cents / *watt.

Most 1 kW motors cost between 6 cents* / watt and 20 cents / *watt.

Is this simply a matter of materials volume/ weight and therefore costs are linear with power?

Bret Cahill