I am looking to offer free shipping on orders over $100 but only for specific products (parts) - For example if a customer purchases $100 worth of "replacement parts" then they will receive free shipping. Now, we also sell some other products that are above $100 but that do not qualify for free shipping because they are heavier than "replacement parts".
How can I go about this?
I see that there is an easy way to set free shipping on orders above a specific amount but I don't know how to exempt some heavier products that would make the order go over that amount.
So what I need is to offer free shipping for some orders above $100 and still charge shipping for other orders over $100 if they contain specific items.
Any ideas ? I would truly appreciate any help on this.