I think you should have your part CNC machined from one of the Rapid Prototype companies in China. There is a discussion thread on the boards here somewhere where people have listed a number of reputable suppliers.
When done in China- CNC machining for prototypes is actually quite affordable and the quality of part is superior than 3d Prints.
I would even think you could get a part EDM machined and polished from stainless steel from one of these firms for a reasonable price.