I think you mean GLOW helicopter. I have a GAS helicopter and it is tough to beat $2.50 a gallon for fuel plus a little bit of 2-stroke oil. I have a duralite batt pack which last for hours. The helicopter can fly 25 minutes on one tank BTW. Basically a weedeater motor.
Gassers are really coming around in performance but, crashing is rather expensive. The 830mm blades on my gasser are $300 although I have never crashed it (knock-knock).
The regular
3D gassers are awesome!