We are in for a LONG LONG period of $300-600.. a long period.
$300? We haven't seen $300 since last November. That's like the mythical $30 it was supposed to fall to last summer or the <$1 it was supposed to fall to in late 2011.
Sorry, it aint gonna happen.
The last half year has seen the price pretty steady in the $450-$680 range.
When this changes, it's far more likely to rise toward quadruple digits than to fall as low as $300.