The DEMO version only includes 4 pages:
http://cowboysandenginesthemovie.com
http://cowboysandenginesthemovie.com/projects/1865079920/cowboys-and-engines-the-updated-version/widget/card_ext_iframe.html
http://cowboysandenginesthemovie.com/the-film.html
http://cowboysandenginesthemovie.com/the-cast.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