I see wiki.okfn.org got taken down in 2016(?)
It had a really good listing of freedom of information (FOI) efforts to assess the cost of journal subscriptions paid out by libraries around the world. Here’s an archived copy of what it looked like: https://web.archive.org/web/20170326164629/http://wiki.okfn.org/Open_Access/OA_FOI
Could OKI please think about resurrecting this on an editable OKI page somewhere? It really was an unparalled world-leading effort to collate journal subscription data from across the globe. I know of no other listing. Furthermore it would great to keep such a page open for additions as more and more of this data gets unveiled.