The DEMO version only includes 4 pages:
http://berlitz-blog.com
http://berlitz-blog.com/category/business-english-speak.html
http://berlitz-blog.com/category/business-english-write.html
http://berlitz-blog.com/category/convenient-business-english-summary.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.
Go back to the index page