Conditional Free Shipping Packets & Boxes
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This plugin customizes WooCommerce shipping costs based on the product categories and total cart quantity.

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PACKETS CATEGORY
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- If your cart contains only products from the 'packets' category:
    - Less than 5 packets: Shipping is $4
    - 5 or more packets: Shipping is FREE

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BOXES CATEGORY
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- If your cart contains any product from the 'boxes' category (regardless of other items):
    - Shipping is $8
    - This rule overrides the packets rule if both are present

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FREE SHIPPING (TOTAL QUANTITY)
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- If your cart contains 100 or more items (from any category):
    - Shipping is FREE
    - This rule overrides all other shipping rules

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NOTES
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- The plugin automatically applies the correct shipping cost based on your cart contents.
- If no products from 'packets' or 'boxes' are in the cart, the default shipping cost is used. 