Users configure their very own shipping rates in their eCommerce stores. Although there isn't an automated option for this, you can make revisions using the help desk of your store platform.
Shopify - Setting up and managing your shipping and delivery ยท Shopify Help Center
WooCommmerce - Setting up Shipping Zones - WooCommerce Docs
CommerceHQ - Managing Shipping Rates and Zones
BigCommerce - Shipping Setup