If it works, then it would be a super-Heli ...

Unfortunately, I must add my voice to previous speakers in part, have something of Revell expect else!
For me, the top rotor is after 10-12 boots also completely failed (without major crashes), he allowed himself to push again, then he ran no longer.
This problem seems to have sometimes Helis other manufacturers.
If this works, however, Heli, he floats almost motionless in the air and can be controlled very precisely. He is due to its ease of use in my opinion, also for children (no prodigies ;-)) from 8 years of age (recommended from 15 years).
Otherwise, it makes a very strong impression.
Obviously some Helis (2.4 GHz) are in this price range or size almost identical (be likely in China for several manufacturers produced !?).
After returning I try again from prion and have even ordered me an additional S-IDEA-01108 (S-IDEA-01105). This is currently much cheaper, but seems to two buttons on the remote control to be identical (see, for example, also X-Copter). The AMEWI LEVEL X CHANNEL INDOOR HELI also appears to be almost identical.
However, with the other manufacturers no batteries included in delivery are included and more importantly, it is at most a tail rotor supplied as a spare part. When PRION batteries, a tail rotor and four main rotor blades are attached as a substitute.
My conclusion from my own experience and reading countless reviews seem to be: "It is a matter of luck WHETHER HELI lasts longer!"
So good luck !!!