TheGameCrafter.com

I've used TheGameCrafter.com to create copies of all of my recent game projects. They also have a sales option, so they can sell whatever you create there. It's a very neat service, very cool for independent game designers, where you can get professional-quality components for very small print runs. It's a little expensive per copy, and the packaging is not up to the standards of the rest of the components, but it's well-run, very flexible, and is something I've been looking for for a long time. They seem to be evolving quickly, and they're generally quite responsive to customer/designer requests and ideas.

I wrote a full review/testimonial on their site.