How much does one cost and how does one go about obtaining such a thing? Just how much beer is in a keg anyways?

One keg is 15.5 gallons or approximately 140 of the classic red cups you'll see at keggers, college parties, and other gatherings of the sort.

Cost is relative to the quality of the beer. Obviously Miller is going to be a hell of a lot cheaper than a keg of, say, Smithwick's.

bad ass. ok, how much is a kegger of miller, or a keg of bud? you can just pick these up at a fuckin liquor store or what?

Depends on the liquor store. My favorite place to pick up booze is called The Party Source, located in northern Kentucky, across the river from my city (Cincinnati). They've got an entire 'beer cave' with dozens of kegged brews, but most people can't expect to get so lucky.

Cost is also relative to taxes etc. in your state.

But you're probably looking at around $60 to $70 for most domestic macrobrews.

EDIT: I forgot to mention the deposits, which range from $20 to $40.

youre shitting me. thats great. well im not really a fan of any local brews but hopefully i can find a keg of some bud. fuck does that sound good. thanks for the help!

deposits?

deposits?
Yeah, you've gotta put a certain amount of money down that'll be refunded as long as everything comes back in the same condition as when you rented it out. An insurance, if you will.

deposits?

Yeah, you can't keep the keg dude.