The eagle 50 does fly out of the box and it's difficult just like any other 6 ch heli. I've personally flown and repaired this heli and most of the time pilot crush due to inexperience. Eagle 50 is only available in the USA market and those who carry this heli ships from USA.
All parts are available here:
http://www.xheli.com/exrcea50rche.html
Andy