I have a Syma S107G that cost about the same. Like the other few things I have, not flown in a while and it this case (the others have batteries you can just plug in and remove) never got round to finding out about replacing the battery when it failed.

Dead easy to fly and as said before, I think the concentric rotor ones are naturally stable (and incidentally, don’t use a tail rotor to stop the craft spinning round, the main rotor blades spinning in different directions take care of that and allow turning). They can’t (at least usually) do the side to side movement you’d might expect from a “normal” helicopter though. I've also got a couple of small fixed pitch ones I could cope with.


Some info on different types of RC helicopters here