Im Guessing $60 XBOXs Are Craigslist Specials? lol
nah i seen $60 4GB 360 on sale at Gamestop on more than one occasion. i dont think thats the standard sale price but its not out of the ordinary either. i think they might have been refurbished.
as far as which one to buy, graphics is really so close its not really an issue, but on some games 360 has a very slight edge. PS3 does have better exclusives though.
But realistically, if you are buying this late in the game, you can pick up either cause they both have very extensive and diverse libraries so its not like you will be without anything to play at this point. They are both great systems and you cant go wrong with either. Xbox will probably be cheaper.
but like i said, check your PC specs first cause you might already have gaming ability.