The Makerbot printers range around the $2000 mark, and I think it's about $50 per spool of the plastic printing material. 3-D printing of metal parts is possible right now with EXTREMELY expensive printers that use layer sintering of powdered metals. Not sure how far that particular method has come though.
"If you carry a gun, people will call you paranoid. That's ridiculous. If I have a gun, what in the hell do I have to be paranoid for." - Clint Smith