Hi,
Well, if your shipping company has a table of prices with 1600 combinations of prices, that's indeed what you will have to do.
If you use UPS, USPS or Australia Post, there is a shipping plugin available for them which will retrieve the rates automatically from their servers.
If you don't want to enter all these shipping methods and if your shipping company has a web service available for such plugins, you could develop one. We have a documentation on creating shipping plugins for developers:
www.hikashop.com/en/support/documentatio...r-documentation.html