Let's see how Amazon's 3-D store does
Now that Amazon is offering 3-D printing, it will be interesting to see if people will take advantage of it, and be willing ot wait a few days to get their custom parts, or will they see the need to invest $1000 to $2000 in their own machine, which they'll have to maintain, just like an ink jet printer, in order to get nearly instant gratification. Currently, even fairly simple parts require an hour or so to build on a Makerbot. And choices in hwo the build is done can greatly affect the parts. There is a learning curve involved. Will the masses be up for that learning curve?