How can I configure a free shipping discount for a manual bundle?
By default, the total price of the Frequently Bought Together items is the same price as if they were purchased separately.
However, if you want to encourage your customers to buy a particular bundle, you can configure different types of automatic discounts, including a free shipping discount, to be applied to a manual bundle.
In order to configure it, just go to the app preferences page and look for the 'Manual bundles' section:
Then, look for the manual bundle to which you want to apply a discount, and click on 'See bundle':
Once inside, check the 'Add a discount for this bundle' option and select the 'Free shipping' discount type:
Then, on the left side, you can configure the minimum bundle amount to apply a discount. On the right side, you can also configure the discount message that will be displayed in the Frequently Bought Together widget, and the discount applied message that will be displayed in the shopping cart when the discount is applied. If you want to configure the styling of these messages, it can be done in the 'Visual preferences' section.
Important information
The free shipping discount feature provided by the Shopify Platform is quite loose. You cannot limit it to some particular products or number of products so the only constraint is enforced is the minimum order value.
For that reason, once a free shipping discount is applied to the shopping cart, it would still be valid even if more items are added to the cart or the items in the cart are modified, as long as the minimum order value is reached.