Actually you'll see that the Q6600 is more expensive than that now. Anyway, an extra R800 just for an extra core? Not really worth it of you ask me.
Like I said I chose take2 so everything was in one place. I'm sure if he gave the list of components to the guys at pcint he could knock a couple hundred off the price.
It's awesome value for the price. A tri core is just more value for money because everything is moving multicore. Hell even GTAIV pc has a tricore as the recommended processor. It'll last you longer.