Just read an article today elsewhere about the expanding 3D printer market. The gist of it was that a main area of expansion will be manufacturing contract shops that would invest in the printers and materials and then become the go-to place for people / companies that have the need but not the resources for the equipment. Sort of like a Kinko's / contract manufacturer combo. It seems like this would be a good product for a business like that.
The more durable plastics for 3D printers--used for auto and airplane parts, for example--generally go with the higher-end very expensive machines, since they're aimed at industrial apps, not at individuals or prototypes.
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