While an interesting, unusual and rather well done modeling job in itself I'll admit, I honestly don't see any purpose in buying/owning such a display item if it is the work of someone else, unless perhaps one had some actual connection with the making of the particular movie. Certainly it won't fit into most layout designs. I think that this conclusion is backed up by the fact that there was but a single bidder for the item.
Looking at this realistically, custom models of specific movie locomotives, or even movie scenes, done in miniature typically remain recognizable in hobbyists' and the public's mind only for a very short time. I've seen renditions of same from movies like Fried Green Tomatoes, The Fugitive, Runaway Train, Dark Territory and the latest film "Unstoppable" with loco 777. Even the most recent of these examples will be all but forgotten within just a few years unless the viewer is prompted. I'm afraid that such items quickly become little more than a curiosity, or an expensive paperweight, that only had any identity and value at the time of the associated movie's popularity.
NYW&B