The DEMO version only includes 4 pages:
http://ndtstudies.com
http://ndtstudies.com/about-us.html
http://ndtstudies.com/what-is-ndt.html
http://ndtstudies.com/asnt-level-iii-basic-exam-preparatory-course.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://www.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
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