juz got mine .... the most feasible deal was the 120GB HD ... cost $1/GB others will cost slightly more ... might have changed by now .
Also ... got my external hardisk case for $45 ... USB 2.0 too ... try not to get fm those shop in the front .... i got mine at SLS 4th floor ... outer ring shop ... few shops away fm the apple shop .... ( not the one on the 6 or 2 floor one ) ....
cheers