The DEMO version only includes 4 pages:
http://premiummember.com
http://premiummember.com/secure-sub/signup/signup_id-7-nats-NDA0NDEuMTEuMjkwNy41NzMxLjAuMC4wLjAuMA-step-2-tpl-join.html
http://premiummember.com/tourcs/click_id-14-ext-jpg-nats-NDA0NDEuMTEuMjkwNy41NzMxLjAuMC4wLjAuMA.html
http://premiummember.com/join-sub/signup/signup.php-id-14-nats-NDA0NDEuMTEuMjkwNy41NzMxLjAuMC4wLjAuMA_-step-2-tpl-join.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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