is it any good?

yes

end game = big goldsink
still fun if you have a lot of buddies to play with though

Tera has, hands down, the best pvp/combat in any rpg style game.

Love it, only stopped because all my friends quit playing. Isn't a ton of End Game content to keep you busy, but the last boss is one of the coolest fights in any games Ive ever played. Definitely worth experiencing ... it will be something you think back on down the road.

They are about to release some new endgame content so feel free to be up to date about it.