Greasemonkey script which finds the articles which actually can be shipped to your country

check-amazon-for-ability-to-ship.js

// ==UserScript==
// @name     Check Amazon for ability to ship to CH
// @version  1
// @grant    none
// @include https://www.amazon.de/*
// @require https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js 
// ==/UserScript==

// BEGIN: Logic Article Page
// Check if article cannot be sent to CH and if so, close the tab
// This is where "Dieser Artikel kann nicht in die Schweiz geliefert
// werden." will be written
var notAvailable = $("#ddmDeliveryMessage .a-color-error").length != 0
if(notAvailable) {
  window.close()
}
// END: Logic Article Page

// BEGIN: Logic Index/Search Page
// When on a search index page, ask if all results should be opened
// in a tab and checked for ability to ship to CH
if($(".s-result-list").length != 0) {
  if(confirm("Open all links in tabs and check for CH shippability?")) {
    $(".s-result-item a.s-access-detail-page").each(function(index, link) {  
      window.open($(link).attr("href"), '_blank');
    })
  }
}
// END: Logic Index/Search Page