no , spending 300 dollars on a ps3 because one game "looks great" , sounds a bit impulsive , wait until you see two or three games that "look great" , then your on a winner .
My flatmate did that, bought an XBOX 360 just to play Gears of War 2.
Sort of a waste of $600 really. We haven't played it much since.
PS3 itself was a good buy, we have played plenty of games on it and are continuing to do so with Silent Hill 5. Depends if you plan on purchasing more games