Hi,

The least expensive is from BoomTownhobbies.com. It may have that o too but the replacement parts are CHEAP. I looked at others that cost far more BUT when you break a tail fin the replacement parts are extreamly costly and as much as the whole dang thing was from the start. Give this a look at Boomtown.
Look for CX2 and Boomtown parts not eflite when your own his site. Jamie is the owner and TOPS and is a great guy to work with or cal him and ask questions to.

JPee