There was one on choochooauctions.com a few days ago that had no bids on it. Has had no bids on it several times and timed out and relisted with a lower starting bid. Last one was $ 320 I think. I bought a set for my daughter (yeah right!) when she was little, it is a very nice set, there are even extra cars available for the set.
Good luck Hunting,
Chris Sheldon