We just released the 'Multiple Shell Merge' feature. It was announced on our blog earlier and it should save you some money. It took some time to iron out the last wrinkles, but we're happy with the results now. There's just one catch: it doesn't work for color (i.e.: VRML2) models yet, but we're working on that.
Two other interesting features after the link!
"Add all materials" action to material restrictions function
An 'add all material' link for the restriction list on the product details page is added. You can now put all materials on the restriction list with the new link and click on the trashcan to add a material for his product. We hope this new link will make it easier to handle our growing offer of materials.
Only for your own objects: the model volume is displayed in the Model Info bar.
As an interesting side-note: the latter two features were requested during the Shapeways Live webcast of July 21st. During each webcast, we try and pick out one or two features that we can implement quickly. If you'd like to suggest one, just attend! The next webcast is scheduled for August 18th.