Every trial is the full paid script with one difference: a soft cap of five concurrent players. Install it on your own development server and keep it for as long as you want. No email, no card.
Above the cap, server-side features pause until the player count drops back. The resource doesn't stop, nobody gets kicked, and other scripts on the server are unaffected.
Trials are rolling out script by script. Check back soon, or browse the full catalog.