well my public library just purchased one. For what I have no clue. I have been looking to play around with this method of building, so I was curious about cost wise. I'm mainly looking to make helmets and small intricate parts for weapons.
makerbots are not good printers.
source: I used to work there. read reviews on the makerbot users group online too. it's full of people who are unhappy. there are many other options which are cheaper and better.