MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I don't know any motor which fits the same size. The cheapest possibility would be any low rpm DC motor. This would also mean that the driver can be replaced by a single mosfet but the rotation counter would not work without an additional sensor.