In fairness I bought mine (yes it is exactly the same) from a world famous Toy Shop in London!! - and paid £40 for the "privilege"!! - which makes me even more fed up!!! It looks good, and sounds good BUT in reality you can only change letters when it is flying, and is difficult to see what you are changing them to whilst it is spinning. If you can control it, fly it, and change letters letters at once, maybe you should apply to be a NASA test pilot! Also, whilst initally it happliy flies up and down, and is a degree of fun, after only about an hours play - it now dives off and crashes all the time, and that is flying in a furnished room with soft furnishings - so it is hardly in anyway robust as you get to grips with how to fly it.
I really wouldn't bother!