Would one be able to upload these to Shapeways and print them off there?
You could certainly do that. It's easy to create an account and upload any STL files. Shapeways would automatically check the files against their design rules (making sure walls are thick enough or the supports are in the right places, etc.) and tell you which materials could be used to create the unit. Further, you'd pay cost instead of marked up prices.
However, you might be better off using the guy Ghukek uses to print out his models, xpforge.com/
I imagine his price would be lower than Shapeways' price...even at cost.
Would one be able to upload these to Shapeways and print them off there?
You could certainly do that. It's easy to create an account and upload any STL files. Shapeways would automatically check the files against their design rules (making sure walls are thick enough or the supports are in the right places, etc.) and tell you which materials could be used to create the unit. Further, you'd pay cost instead of marked up prices.
However, you might be better off using the guy Ghukek uses to print out his models, xpforge.com/
I imagine his price would be lower than Shapeways' price...even at cost.
I used their free download file to upload to shapeways for a price estimate. Pretty surprising results. Only $10 for HMS Queen Mary in 1/1500 scale in WSF, and $6.50 in 1/1800.