I was under the impression that the N1 is an all-new ship, and out of the mid-size range. It is definitely larger than the original, actually to-scale now it appears, and a ton more accurate with the way the cockpit slides forward (and opens on hinges too, to get the droid in).
I think that'll be more than a mid-size vehicle, but I'm in... If they can deliver high quality, I'm probably willing to pay a bit more on that one. Scaled ships would have my money. If they did an X-Wing, I'd be willing to shell out big for something like that... or a Y-WIng, B-Wing, etc. I did for large scale airplanes from WW2, and still do for tanks/armor. So long as the quality is there, I'm in on that kind of stuff.
If it's underscaled, or just a slight retool... why pay more for it ya know? the original isn't that good to begin with IMO.