The Astrotrain is a medium cargo plane added in the Concept Planes event which lasted from mid July to mid August of 2014. The plane cost 180 Blue Prints which were used as a currency during the event. This made it the most expensive thing added in the event. The plane was then re added in the Flashback Event VI which lasted from mid May to mid June of 2015. The plane then cost 180 Trophies which were used as a currency during the event. This made it the most expensive thing re added in the event.
Time: 24 Hours