"brand new system" It's used, so you can't really call it new.
I do agree that refurbs are a great buy for the money.
However, some companies may not be diligent when looking over the parts. They may only test it enough that it runs Windows and nothing more. Also, most refurbs carry a short warranty.
But the price is definately right.
I have to admit I just love refurbs and often go to that part of the web site exclusivly. What could be better than a brand new system that someone has already worked out all the bugs on!

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