Have you checked
Alibaba.com - The world's largest online B2B marketplace. You will probably be able to find a company in China that can manufacture with the low minimums, but you'll run into major issues such as quality control, communication barriers, customs, etc.
I think you are best off making some phone calls to domestic manufacturers that specialize in short run custom products. You will pay a higher price, especially for lower minimums, but there's bound to be something around...
Good luck!