I am not sure if you can find out cheaper server in Asia. The bandwidth in Asia is very expensive, and the hardware is a bit more expensive too. So with the same configuration (hardware, software, service), Asia-based server will be more expensive than US-based one.
Anyway, it depends on what you want, you might have better vendor in anywhere. I know some good EU vendors, but they are expensive too, more expensive than US vendors (of course, I am saying about good vendors only)