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Expercom.com has pre-order prices posted along with pricing for upgrades. Who knows if they're accurate, though I would assume so if they are actually taking orders at those prices.
 
It appears that the Fusion will cost about $250 with the 1Tb drive. From what others have said here, then it would be much of a savings to buy a 3rd Party SDD and boot from that.

The SSDs cost nearly $200 alone. Or, am I overlooking something?
 
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