 <p>One alternative I can think of is Linked CSE. It is a CSE where you host the annotations (urls associated with labels, which decide whether url should be displayed or not) lives on your own server.</p> <p>Because you are not pushing the annotations to Google, you don't incur indexing cost.</p> <p><a href="https://developers.google.com/custom-search/docs/linked_cse" rel="nofollow">https://developers.google.com/custom-search/docs/linked_cse</a> </p>