Hi Yusuke,
The Cart supports the ability to charge shipping rates by region and also set a shipping rate at the Product level. The ability to charge a shipping rate based on the product and region is not currently supported but we are available to and this feature. If you would like a quote to move this into programming please submit a Quote Request at the following link:
http://www.smith-consulting.com/servi...
We quote all features enhancements below cost since it is enhancing the module and in most cases we can start work on the new feature within a week.
Thanks!