Subscription Extension... Confusion?

[ultraviolente]

My 30 day trial is coming to an end, and i just can't get enough. So now i'm looking to extend my subscription, but am slightly confused about it.
I've seen a few old (pre-core c.) versions of the game for sell in soem local stores, but they were down on strangely low prices, while the on-line monthly subscription costed alot more... So i decided to check it out before buying something useless.
So what do you get when you buy a boxed version? You get a month subscription key, a cd-key, or a permanent subscriptions because you like "bought" the game? If, so, why does anyone even pay for monthly subscriptions?
Please explain.

[Hamma]

http://www.planetside-universe.com/f...&postcount=126

[ultraviolente]

Oh, so it's a monthly subscription fee still? Well that sounds simple.
Now, would there appear some kind of a subscription monitor page where i can cancel/stop the automatic feeing procedure, or is there a totally different system that allows you to pay for your subscription when you want?