It's a wonderful game for the first month. During that time be sure to play Tortage through with each archetype, the storyline quests are different, and toggether you unveil the full story on Tortage. Tortage is possibly the best (in every sense of the word) setting found in any MMO: Great story, excellent gfx and especially wonderful sounds and music.
After Tortage it goes downhill fast. I played one toon to around 42 or so to see the first proper group instance, not the Pyramid but the one with the Bloodpit and all. The instance was great, but buggy (but not as buggy as the Pyramid). After that the game had shown all it had for it, I think. Still, I do not think it was a waste of 40 euros, it was worth it (and if the game is now 10 euros, then it is for sure worth the "free" month).