For those of us here that is rich enough, here are some interesting toys, with and without detailed interiors.
Full Scale Apollo Lunar Lander. $89,000
Full Scale Apollo Lunar Lander
Space Shuttle Orbiters Full Size. $120,000
Space Shuttle Orbiters Full Size
Full Scale Mars Rover. Remote Control or fully autonomous robots like the real NASA robots. $29,999
Full Scale Mars Rover
EDIT: The Mars Rover is out of stock. Demand exceeds supply. Probably.