it's like a 20 buck difference. Mavericks isn't coming out for at least a month. I rather have the newest hardware then both for both to be available. Apple isn't like Microsoft who for every small update wants 200 bucks.
That $20 bucks actually works on unlimited computers. My roommate got the newest OS. He put it on his,mine and my/his gfs macbook pros(4). Then when I was selling my dads iMac he was able to put it on that iMac as well.
😀