If you compare spending a little more now for
(1) an item WITH a warranty. (refurb/or new)
(2) better resale value
(3) better future proof(and better specs - nvidia(up to 256mb vram, compared to crappy intel gma)
(4) and get a free touch(if you go for the new and not refurb route)
Than spending a couple hundred more is actually the SMART thing to do. Also, who knows what will happen to this laptop, or what this 'used, no warranty' laptop has been through?
If you can't afford that, then I would say to wait and either:
(a) save your money for the better one
(b) get an MS wind and hackintosh it
(c) or forget full portability and get a mini for about the same price!
(3) Not everyone needs a lot of GPU power.
(4) Only if you're a college student.
Not everyone has that much money to spend.
(b) You mean MSI Wind. And not all of the Wind works.
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OP: I thinks you should get this, but see if you can have the charger in the background. Having the install discs is a major plus, too, though if it were older, say an iBook or a PowerBook, the lack of install disks would not ring stolen bells in my head.