User blog comment:Equillibrium/The Math Behind Subscription Fee's./@comment-122.107.249.163-20140201135434

Your forgetting one big piece of the puzzle. At 15USD a month lets say a 100,000 users due to subscription (a fairly small userbase) thats some $1,500,000 per month (36 million over the 2 years).

That equates to over 20 times the expences. For convienience lets double all the expences given, and thats then 2 months of subscription fees to cover 2 years of expences (Lets be concervative and round out to 20 months of pure profit).

I do appreciate the costs involved are higher than quoted, but the userbase would be as well.

I'm also not convinced they wont add buy-in expansions and cash shops eventually either.