Sex.com review
Sex.com separates public browsing from paid video-on-demand. Its navigation includes videos, channels, photos and GIFs, while its terms define two ways to pay for video access.
One video versus one channel
The video-on-demand terms offer a one-time payment for streaming an individual video while it remains available. A recurring channel subscription covers available videos in that channel for the active term. Adult Empire documents separate rental and purchase options for eligible titles. On Sex.com, the terms describe account-based streaming for an individual paid release, with continued access tied to availability.

Creator identity and publication rights
The creator terms require identity documents containing a date of birth. Uploaders must hold publication rights and permission from each person who appears, including consent to upload the work. The operator also publishes a separate policy for material shared without consent.
Anabel’s take
I’d pay for one stream if I planned to watch it soon. For a title I wanted to revisit much later, I’d look for an offer with clearer terms for keeping access.