I wasn't overly impressed when I played the open beta.. plus it didn't run very well on my outdated computer (P4 2GHz; 1GB RAM; GeForce FX 5200)
the $200 for life sounds like a pretty good deal, but I wouldn't bother with it (I don't really have the time to play it anyway)
If you're hurting for a new game to play, it might be worth your while .. but I'm voting no.. be patient till GW2