If 3D is not a conecrn.
If you wanna go cheap,
I was looking for a G-Smart for months and they got discontinued, but still cheap.

Check out the marketplace in the forum.
Lots of Nitro helis either ARF, RTF or receiver ready at awsome price.

I think what you're asking is
why ARF's are
cheaper than the Kit?

I can answer
1. Probably cause the ARF's are used likely,
2. ARF may have cheap i mean really cheap electronics. and the heli also may have cheaper parts
3. Watch out for the clones and the knock-off's. Clones are fair in price but knockoffs needs to go straight into the trashcan.