As far as I know this is not possible to do this way and if US buyers are your targeted market I don't think it would make any difference in your ending price as the Euros should show converted to USD. If they did not you would probably actually scare buyers away
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .