just the processor (i7 3770) would cost close to $300.
this is a great deal.
I recently put together a machine (i5) from scratch using old hdd and still got me close to $600
Was pricing out I5 upgrade for my dad's decaying system. It was about $425 (MB 125+CPU 200 +MEM 50 + Power Supply 50).
If looking just for I5 then this system is similar at 399+29+tax