Hi Korrok,

There is no free trial system at this time.

The Buddy Pass system is a bit different from Final Fantasy 11. A Buddy Pass comes with the Collector's Edition of Final Fantasy 14, grants 30 days of full access to game features, and serves as a full software purchase ($20 value).

My understanding is that there will be a trial version available around the release of 2.0, presently slated for October.