The DEMO version only includes 10 pages:
http://webflow.io
http://webflow.io/home-page/home-one.html
http://webflow.io/home-page/home-two.html
http://webflow.io/about.html
http://webflow.io/pricing.html
http://webflow.io/sign-up.html
http://webflow.io/sign-in.html
http://webflow.io/reset-password.html
http://webflow.io/template-info/style-guide.html
http://webflow.io/template-info/licenses.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.
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