its not indestructible, but it gets close.

also, you need to look further if you think WCG is the only tournament there is. MLG/WWI Paris/CGS and thats not even including the local/continental tourneys in europe, china, korea and taiwan are amongst the common tourneys in WoW. and above all else theres the online tournament that blizzard is hosting where everywehre around the world is participating.

the monthly fee is also around rm50 or even less if you pay 6 months haha (do you even play WoW?)
the rm120 you mentioned is TWO months, which does deserve some clarification. also, usually people pay from rm90-110 for the month card (again, that last 2 months)

other than that. pretty decent article

/facepalm

cant win 6months sub