I remember once I was in a shop selling aquarium supplies, and looking at the little figure ornaments to go in the tank, and thinking "I could make a nice one of those in Poser" before I realised the problems in printing it out!

When I was last in Japan I saw a demo of a machine for "printing" 3D models by carving plastic, but prices were of the order of "If you have to ask you can't afford it". It's the same with any technology - remember how expensive the first colour photocopies were? Now anyone can afford one. But in the case of 3D printing, the market is so highly specialized I don't think they will come down in price that much, because there will never be the volume of sales needed.