More about them here.

There are a lot of posts who are not transparent about their pricing from their reddit posts. They like to refer you to their discord instead, not even a website link where details and comparisons may be available. Moving forward I'm not entertaining these kind of Plex Shares. I'm not following you on Discord. You're all a waste of time.

strmsolutions - no info on the size of the collection – has a $2 per month plan

Norseplex

Sailing Seas - found on Reddit