Definitely should be subbed based for the reasons articulated by others.
As for, what about letting people try it, I hope there is a prelaunch open beta (final version) they give access to... then a wipe.
Once launched though, there will be a ton of youtube videos and reviews... so you can decide before buying based on that info... like virtually most games (maybe not MMORPGS recently, but cyberpunk2077, FPS like COD, survival games like Vahlielm, etc.)
Cash shop... even cosmetics should be obtained in game, but like someone mentioned, a guildcrest upload or something... that would be cool.