There's no way to answer this question without knowing exactly what needs to be fixed.
$600 USD
500 or so
50-1000 USD or more depending on specifics
100-400 or so
50-1000 USD or more depending on specifics
100-1000 depending on specifics
Impossible to answer without knowing EXACT model and serial number.
$300-$375, depending on exact version and condition
50-500 depending on specifics
Around $600, depending on model and condition.
50-400 USD or so
100-325 USD