Go to your eBay account and open the items you want to buy
Add all eligible items to your cart
Check whether the seller offers combined shipping
If the seller does not combine shipping automatically, message the seller before paying
Ask the seller to send an updated invoice with combined shipping
Wait for the seller to revise the total
Pay only after the combined invoice is sent
If you already paid, contact the seller to ask whether a partial refund is possible
Review the seller’s shipping policy before buying
Use the same account and shipping address for all items
Make sure the items are from the same seller
Confirm that the items can be shipped together
If using Best Offer, ask about combined shipping before accepting
Save the seller’s response and invoice for reference