RE: Electric Heli with scale fuesalages
The only real options in this country are the trex 600 or raptor 620, the trex is the most popular of the two and will readily fit into most of the 50 scale bodies and spares are readily available and affordable
Midland helicopters have one for £300 including free carbon blades
The big downside of these helis are the cost of the batteries and chargers and a good quality battery can vary from between £150-£200 and a charger between £80-£100.
Hope this is helpful