thanks for the info both of you.
yes, its editor is a bit "too much", I also like to do some coding instead of a series of in-editor clicks and drags. but making a general editor suitable for everybody is a difficult task... by google I found severel great free packages for unity which are interesting. and having a great tool for money is a bit better than don't having at all, this is why nearly all engines has their own shops. but of course I prefer the free stuff popular here (probably making money of them would require more users).