dont order a refurbished one. I ordered one and i got nothing but trash. bent keys, dead pixels, etc... if i were u go with a new one + a student discount and it'll be a small difference that is well worth it.
Ignore that comment, I have a refurb MBP 15" and mine has been fine.
Refurbs come with the OS installed with which they originally shipped. No Snow Leopard refurbs will exist for months.
Correct, but they put a drop in DVD after the shipping day, and it's up to the user to upgrade.