Hi @Seller_GKQNzzlDlLRP5:

Tiff here from Amazon. I noticed that other sellers hadn't offered opinions yet on this topic, so I wanted to jump in and provide the Amazon guidance on the subject.

Below are suggested Seller Central help pages that offer details on the options you have for charging for shipping costs. You can then decide how much to charge based on the guidance.

Issue a Partial Refund - Issue Restocking Fees section: Charge or Refund Return shipping. In circumstances when a buyer returns an item because they changed their mind, and Amazon charged your account upfront for return shipping (occurs when buyer uses Amazon’s Prepaid returns for seller fulfilled orders), you may choose to pass along the cost of return shipping to the buyer. To charge a buyer for their return shipping, click on the Charge amount box under the Additional Refunds/Charges section of the Refund Order page. The Charge option is available only for buyer faulted returns made using Amazon’s Prepaid return label. To learn more, go to Return Reason codes for Prepaid Returns. Note: For Sellers who have opted into Free Returns, you will no longer be able to deduct the return shipping fee for in policy returns.

Buyers are entitled to a full refund if they do not receive the shipment from their order. Here are the supporting help pages:

• The Manage Orders FAQ page (specifically the section: What if a buyer says they didn't receive their order?) outlines tips should this situation arise in the future. If a buyer says that they didn't receive an order, your customer service policy ultimately determines how you will handle it. All sellers are expected to provide high level customer service, and the most customer-friendly solution is to issue a refund for a product that was not received.
• Undeliverable Packages: When the carrier returns a package as undeliverable, we automatically begin issuing a full refund (including shipping charges, except for some handling charges). You receive an email confirming the return and refund details within 48 hours of the undeliverable scan. For information about the time it takes to process your refund, go to Refunds.
• Amazon’s A-to-z Guarantee Claims (Instant customer refunds): Tracking shows that the package is returning to you: If the tracking shows that the item was undeliverable to the customer or refused, and we receive tracking information indicating that the package is returning to you, we will automatically refund the customer and debit your account for the Claim amount. It does not impact your account health or order defect rate (ODR).

Does this help?