To request an invoice on eBay, add multiple items from the same seller to your cart, then click the "Request total" button at the top of the cart.
Here's a more detailed breakdown:
1. Add Items to Cart: Navigate to the seller's listings and add the items you want to purchase to your shopping cart.
2. Check for "Request total" Button: Once you've added the items, if the seller has their shipping set up correctly, you should see a link or button that says "Request total" at the top of the cart.
3. Click "Request total": Click on the "Request total" button.
4. Seller Receives Request: The seller will receive a notification that you've requested an invoice.
5. Seller Sends Invoice: The seller will then send you an updated invoice with the combined shipping and total cost.
6. Wait for Invoice: Wait for the seller to send you the updated invoice before paying.