Matthaus, check out Emachine shop. http://www.emachineshop.com/
They provide free software that allows you to design your part. It's Autocad file format compatible and has an integrated pricing for prototype volumes. Including pricing is a very innovative feature which allows design trade offs for lower piece prices. Prototype quality production is done in the USA.
For those just looking for free mechanical design software it may be a solution for you. It's somewhat limited but with some other freeware it can be a useful design tool.