We are running a summer promotion and giving customers free sunblock when they purchase three or more items from the Summer Collection. Shopify isn’t able to add the item to the cart ($0.00). To get a round this we would like to have a banner / text that says something like : “you will receive a free sunblock with your purchase.” when three or more Summer Collection items are added to the cart. The Summer Collection can either be a Tag or a Collection.
Anybody have any code that they can share?