Proto-Models offers 3D printed models of railroad prototypes that would otherwise not be available. Proto-Models strives to strictly follow prototype blueprints and/or actual measurements and will only deviate when 3D printing limits dictate so. These deviations will be as small as those limits allow.
A note about pricing: Shapeways uses a minimum cost price. Many of the models sit around this minimum price. This explains why smaller items sometimes cost about the same as larger items. We are always looking for ways to offer the best price possible.