its $15 US monthly
but appearently its about the same as any onther MMO.
You can play for the Zionists, machines, or Merovingian (<-sp?). RIght now only random missions are available, but when the servers officially open in march a HUGE storyline will unfold connecting everything.
"Mega City" is the place where you do everything and is really huge. One of the coolest abilities in the game is "Hyper Jump" where literallly you can jump over a 50 story building in a single bound.
The Dev Team is great and promotes alot of the activities that happen in MxO (some players even got a 'Clue-like' mystery game going!)
Each class (Operative, Coder, Hacker) has its +'s and -'s. Hackers are like wizards, coders can create weapons, clothing and tools from code fragments around the MegaCity, and Operatives are brute force. THis seems simple but under each class there is an enormous amount of specialization (eg. Operatives can become Kung FU Masters, or snipers, or spys [and disguise themselves as anyone even an Agent!].
Very deep and cool game! Id recommend it, but you should try it out yourself!