Setting up shipping costs based on individual items in Woocommerce is relatively easy to do. Here is a step-by-step guide:
First, you need to enable the shipping cost calculator. For this, go to: **WordPress Admin > WooCommerce > Settings> Shipping > Shipping options > enable the "Shipping calculations" option.
Next, you will need to add a shipping method based on item price or quantity. This can be done by going to **WordPress Admin > WooCommerce > Settings > Shipping > Shipping zones and adding a new shipping method.
Once the shipping method has been added, you can then enter your own custom rules based on item price/quantity. You can do this by navigating to **WordPress Admin > WooCommerce > Settings > Shipping > Shipping zones > zone you wish to add item-based shipping rules to. Here, you will see the option to add "Shipping methods" with individual prices based on your own rules.
Finally, once you save the changes you have made, the new rules should take effect immediately and customers should see the new shipping cost when adding an item to their cart.
If you need a more detailed guide on how to add item-based shipping costs in Woocommerce, please check out the following tutorial:
How To Set Up Individual Shipping Costs For Items In WooCommerce.
I hope this helps.