well, i'm on a tight budget and can't afford new.
well, I don't see how $200 is real savings... I would understand $500...
I'm on a tight budget too, hence I'm buying the base model. But, there is always a way to get it cheaper. For instance, in Canada, either Best Buy or Future Shop, occasionally have them $50 off. You just go to a competitor that has a Lowest Price Guarantee, and you can get 10% off that sale price. This way you can save $165, which in Canada covers taxes. But it is still a good deal, and it's exactly what I'm planning to do. And the saved money I'll use on Apple care plan from Apple store (I get a very good discount) and 1Gb of RAM.
Also, if you are not very good at fixing comp problems, like me, than I would definetely buy stuff brand new.