When constructing a collection's fields, "Page" should be a field option. This would let you choose from any of the static pages in your entire site's Pages.
I would like to maintain a collection of resources that each have their own custom pages. I believe the best way to do this is to build a static page for each and a corresponding collection item that maps the two. This would allow for users to create elements like directories or a navs where the nav items are pulled in dynamically, and instead of linking to the collection item I would be able to link to a static page that was stored in that collection item.
A temporary workaround is to create a Rich Text field with the text I would like to display and have that link to the page, but this is very limited.