It is really too bad that other modeling tools do not support such sophisticated and handy applications as Blender and 3DS Max do. I would have though that Zbrush, Maya or Rhino could also do something like this?
Shapeways community member Virtox made something completely truly awesome for 3D Studio Max(3DS Max, is how they want us to call it) users the other day. He made a script that calculates the volume and price of your model including or excluding VAT. The script also allows gives you a warning if you go over the maximum polycount and helps you see what scale you can use to price your object as you would want to have it. This is a Studio Max script so you can check all of these things from within the application!! I think that this is a wonderful thing and hope that all the 3D Max users on Shapeways help Virtox by testing his script and giving him feedback. You can check it out and download it here.