How does "Fulfilled by Amazon" work?

Items "Fulfilled by Amazon" are shipped from an Amazon Fulfillment Center to you and are subject to standard Amazon shipping rates and policies.

After you place an order, the carrier, ship date, and estimated delivery date for your package will be listed in Your Account and can be found in your shipment confirmation e-mail. If you have a tracking or delivery confirmation number, you can track your package by clicking the "Track packages" link in Your Account.
Amazon also handles all customer service and product returns for "Fulfilled by Amazon" items.

What is the Return Policy

Because order fulfillment is provided by Amazon.com, all orders are subject to the current Amazon.com returns policy.
You may return new, unopened items sold and fulfilled by Amazon.co.uk within 30 days of delivery for a full refund. Items should be returned in their original packaging. Amazon.co.uk will also pay the return shipping costs if the return is a result of an Amazon.co.uk error.