Is there a way to evaluate and test realtime plugins without paying for the enterprise version?

I see plugins are only available for enterprise cloud version of realtime, not the free version.

I want to evaluate if plugins can support server side game logic for a game like bingo, which will need centralized timers and events across all players in a particular game (e.g balls called).

Is it possible to do this without having to purchase the enterprise cloud version, or take a short term free trial?

Photon realtime is missing from the "topics" list, so i chose "any topic and chat". Does the fact its not listed mean im in the wrong place?