New price low. Amazon has the 887-Piece LEGO Avatar Floating Mountains: Site 26 & RDA Samson Buildable Helicopter (75573) on sale for $61 with free shipping. Includes a helicopter toy with spinning rotors, Site 26 lab with detachable roof, 5 minifigures, a Direhorse animal figure, and a scene with glow-in-the-dark elements.