Nick

To try to answer you question on relative costs I have just bought my first F3A model for electric power, as the airframe costs are the same for both I will address the relative costs of the power train.

Electric :Axi motor £165, Jeti spin 99 £180, 6 x Rhino 5S 4900 20C lipo £300, Cellpro 10S charger £125, power supply £40, total £810.

Glow: YS 170 DZ inc YS mount £600, Hatori header / pipe £130, total £730.

As you can see initial costs are comparable excluding fuel, however if I assume 100 cycles from my lipos that is 300 flights pre-paid, fuel for 300 flights would be around 10 flights per gallon at £25 per gallon = £750.

If you accept these figures electric is cheaper to operate than glow after the initial investment and the charger / power supply are not exclusive to one model.

regards

John