1. We currently do not have an existing Vantage Japanese language file, however you can find information on how these files can be created on our main
languages page, including information regarding translator benefits.
2. You can create custom listing forms, so potentially you could do it this way.
3. You input your own PayPal account settings as seen here on the
Vantage admin demo, as well as regional settings, but nothing specific for PayPal redirection. Thanks.