See, why on earth [sic] would you drop five figures for some autographed paperwork from an astronaut, when for the same price, you could get a full-scale model of a Saturn V F-1 rocket engine, as seen at the New York 1964 World's Fair??
It just seems like a no-brainer to me.
May 5, 2011, Lot No: 81W
FULL-SCALE SATURN V F-1 ENGINE MODEL, est. $15-25,000 [bonhams]