Bundle shipping allows you to pay the shipping fee only 1 time for multiple products you are purchasing.
Instead of paying individual shipping fee for each item, bundle shipping fee is calculated based on the total weight of those products as one.
Bundle shipping is only available when;
1. those products are from the same seller
2. those products are shipped from the same warehouse
3. those products have the same shipping method (Courier or Direct shipping)
4. the seller has enabled Bundle shipping function for those products