The DEMO version only includes 10 pages:
http://minerva-kb.com
http://minerva-kb.com/knowledge-base.html
http://minerva-kb.com/feature-requests.html
http://minerva-kb.com/category/case-study.html
http://minerva-kb.com/demos_subdomain/knowledge-base.html
http://minerva-kb.com/demos_subdomain/demo-3.html
http://minerva-kb.com/demos_subdomain/demo-2.html
http://minerva-kb.com/demos_subdomain/demo-4.html
http://minerva-kb.com/demos_subdomain/index.html
http://minerva-kb.com/demos_subdomain/demo-7.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit https://www6.waybackmachinedownloader.com/website-downloader-online/scrape-all-files/ to buy a fully functioning site.
Go back to the index page