At Xerocon 2014 I met a guy who has a product that exports from Amazon to Xero. It might be worth a look if you have a need for it:
Post invoices to Xero
A2X generates invoices from each settlement and posts them to Xero, either manually or automatically. You can select the accounts and tax rates that apply to each type of income or expense either in A2X or Xero.
When the payment appears in your bank account within Xero, you can easily reconcile the invoices to their corresponding payments.