In my opinion, it is worth the money. I don't know about 'long lasting gameplay' though. There's only 4 maps on it ATM, and it can get a bit repetitive. It is headset compatible, although it can sometimes be a pain.
maybe my opinion is moot, because I only played the demo. I absolutely HATE that little markers appear above you opponents heads. I feel like I'm shooting fish in a barrel, and at the same time, like I am one. Whats the point in hiding if I know theres an arrow over my head saying “HEY! HES OVER HERE! THROW A GRENADE AT IT! COME SHOOT ME!”?… heh, sorry, it bugs me.