亚马逊买家想换收货地址，我已经发货了，要如何作出回应？

跟他说你很抱歉，货已发出，一旦这件物品因为收货地址的问题被退到你手上，你会马上把钱退给他

你只能把货发到订单页面的那个地址。发到其他地址，要是出了什么事，亚马逊是不会帮你解决的
直接跟买家说：“Sorry, we have already shipped to the address Amazon provided us, and can not change it.”

你有及时把货发到目的地，尽到卖家的责任，这样就可以了。最佳的解决方案是，跟他说你把货发到了订单页面的那个地址，让他自己想办法到这个地址取货

我希望亚马逊不要让我全额退款，因为我有出运费，还有其他七七八八的费用。。。
刚刚这个人还耍赖说自己根本就没下单，这还有没有天理了？

亚马逊不会让你全额退款，如果你是按着亚马逊给你的地址发货的，那你就安全了。
要是包裹没有被投递出去，你需要退钱，但是你可以不用退买家付的最初运费。。

这是邮件模板，拿去不谢：
“Dear Buyer,
Thank you for ordering from us on Amazon. Your new (item) (Serial) was shipped on (tracking) and was (will be) delivered to (Address) on (Date).
I heard that the wrong address was inadvertently used on the Amazon account, this was the address we received on the order and shipped it to. We are happy to follow Amazon policy and offer a return for refund for any reason. This is your authorization to return, and once received and refunded you can re-order the item.
If you can contact the person at the other address, the package can be sent back to us unopened by taking it to the post office and writing a "refused, return to sender". Or if the package has already been opened, please ask that it be securely re-packaged, and sent using the shipping label that is attached to this email, please affix the appropriate postage at the post office.
Once it has been received here in original condition, we will refund to your Amazon account as per Amazon policy, and you can reorder. Shipping and return shipping costs (if any) are not refundable.
As you may know, Amazon policy does not permit us as a seller from shipping to an address other than the one we receive on the order. Before you re-order, could you please go into your account settings and double check to make sure the address is perfect, including apartment or suite number and buzzer number if necessary for entry.
We will look for the returned package and refund ASAP when it arrives,
Cheers 
Seller”