How to make a paid access to the advanced search?

I have such pages:

a) search_home.php

b) /searchKeyword.php

c) /search.php

I would like to give a free access only to "searchKeyword.php". Acess to search_home.php and search.php will be paid. It means:

- if a standard member goes to search_home.php or search.php he gets no access (plus information why)

- if a paid member goes to the above pages he gets an access

Is it possible? How?

Hello you can use something like credits, points - internal site's money. Or make membvership levels for search pages (with some code changes in search pages)

I'm also looking to have advanced search facilities for paid members only. Can anyone help?