Think of it as a car. No, that is not the way to sell franchises because of the varying population counts. Put one worldwide price on the unit and shove it out the door. The wealthiest people will be the first to buy, then five years later when it needs to be refueled your second hand market will appear. The wealthiest people will then be buying the newer model and selling their old model.
Why would I give you $10M to sell to a country that only has 5M people in it when I can give you the same 5M to sell in a country that has 500M?
http://www.defkalion-energy.com/
Correction
You can’t put one worldwide price on the unit and shove it out the door.