Trainnut,
For something like this, just check the Bay twice a day for 2 or 3 months. It will show up.
One sold last December 21st on the Bay, the K-Line version, for $99.
When it shows up, you have to be willing to put your bid in, big, right away. It won't go for cheap or a "fair" price. Somebody else out there wants one really bad!
By the way, does anybody have the Lionel version? If so, it would be great to see a picture.
Mannyrock