The value does seem to be there, even for the gn15 model. After all, Steves locos were about 30 pounds. At $1.55 per pound, then that's about 46 bucks, and you then had to assemble them. Now most of us like assembling models, but it is also nice just to wash them off and paint them, like the 3-D kind. It is all good. I'll bet there is a market for 3-D kits, so you can customize them. Course then you need to print parts rather than the whole model.
Fairhope, AL USA
After extensive recalculation, I have determined that the meaning of life is NOT 42! The secret of life, however is "enjoying the passage of time" (James Taylor)