I agree with the "be cautious" admonition. As far as I can tell, the 6-18005 model of 1985 or so is almost identical and not susceptible to zinc pest. You might have to change driver tires and add a few details to get it exact.
High price for a 700E was, I think, $32 grand, sealed in original box. Imagine - value would drop to four grand if buyer opened the box and found a perfect model - or to zero if more likely he found warped castings.
I think prices have dropped recently anyway. Too many nice new diecast steam models - hope they don't warp in time.
