Upload your 3D design on Netherlands based Shapeways' website (incubated by Philips). They will provide you with a quote for 3D printing with a choice of four kinds of plastics (metal is planned) and shipping it wherever you like. The site uses 3D industry standard file formats (STL, Collada, X3D) and the average cost of objects is $50 - $150. As seen on TechCrunch.
I am very excited about the possibilities for artists and designers, from anime figurines to limited edition jewelleries.
See how it works here: